Session Index

S9. Optical Sensing

Optical Sensing I
Friday, Dec. 1, 2023  13:00-15:00
Presider: Prof. Chien-Hsing Chen (National Pingtung University of Science and Technology, Taiwan) Prof. Chang-Yue Chiang (National Yunlin University of Science and Technology, Taiwan)
Room: 92371 (3F)
13:00 - 13:30
Manuscript ID.  0654
Paper No.  2023-FRI-S0901-I001
Invited Speaker:
Yi-Chung Tung
Control and Sensing Oxygen in Microfluidic Devices for Cell Culture Applications
Yi-Chung Tung, Academia Sinica (Taiwan)

Understanding the influence of oxygen on cellular functions and behaviors is crucial for investigating various physiological and pathological conditions. In order to study cellular responses under specific oxygen microenvironments, various in vitro cell culture models have been developed. However, precise control of oxygen microenvironments and accurate characterization of the oxygen variations with great spatiotemporal resolutions remain challenging. In this talk, I will discuss the appoarches developed in my lab to control the oxygen microenvironments for cell culture using microfluidic devices, and the oxygen sensing scheme based on frequency-domain fluorescence lifetime imaging microscopy (FD-FLIM) for intra- and inter-cellular oxygen characterization.

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13:30 - 13:45 Award Candidate (Paper Competition)
Manuscript ID.  0081
Paper No.  2023-FRI-S0901-O001
Kuan-Yuan Chang Microscopic transmittance spectroscopic measurement with a supercontinuum laser source
Kuan-Yuan Chang, Wen-Tsan Chang, National Yang Ming Chiao Tung University (Taiwan); Jia-Ming Liu, University of California, Los Angeles (USA), National Yang Ming Chiao Tung University (Taiwan)

A supercontinuum laser source emitted from an optical fiber is suitable for developing microscopic transmittance spectroscopy. The spatial resolution of the microscopic transmittance spectrum as a function of the optical wavelength, measurement distance, and sample thickness is quantitatively evaluated.

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13:45 - 14:00 Award Candidate (Paper Competition)
Manuscript ID.  0743
Paper No.  2023-FRI-S0901-O002
Gajendra Suthar, National Yangming Chiaotung University (Taiwan); Yu-Tang Hsiao, Kuen-Wei Tsai, Chuang-Yi Liao, Raynergy Tek Incorporation (Taiwan); Chih-Wei Chu, Academia Sinica (Taiwan); Yi-Ming Chang, Raynergy Tek Incorporation (Taiwan); Fang-Chung Chen, National Yangming Chiaotung University (Taiwan)

This article discusses the impact of morphology on the performance of photomultiplication (PM)-type organic photodetectors (OPDs). A non-fullerene acceptor, Y6-Se-HD, is synthesized and used to fabricate PM-OPDs with a broadband spectral range from 320 to 1090 nm. The devices achieve a maximum EQE value of ~6500% at 860 nm at a low bias of −1.0 V. Morphological analysis shows that Y6-Se-HD covers the entire active layer, avoiding direct contact between the hole-trapping donor polymers and the Ag electrode, resulting in stronger charge trapping and preventing charge recombination and/or quenching. This research highlights the importance of morphological effects on PM-OPDs

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14:00 - 14:15 Award Candidate (Paper Competition)
Manuscript ID.  0794
Paper No.  2023-FRI-S0901-O003
Yi-De Tsai Highly Sensitive Open-cavity Fabry-Pérot Gas Pressure Fiber Sensor Based on Vernier Effect
Yi-De Tsai, Chin-Ping Yu, National Sun-Yat sen University (Taiwan)

A highly sensitive open-cavity FPI gas pressure fiber sensor was proposed with Vernier effect. By using the beveled fiber polishing technology, an open-cavity FPI can be formed. Besides, due to our sensor contains three reflection planes, we can have a sensing FPI and a reference FPI in a compact sensor structure to induce Vernier effect. The measured gas pressure sensing sensitivity is shown to be enhanced to 4.6 times as 133.43pm/psi.

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14:15 - 14:30 Award Candidate (Paper Competition)
Manuscript ID.  0405
Paper No.  2023-FRI-S0901-O004
Cheng-En Tsai Liquid-Index sensor based on a tapered-fiber Bragg grating
Cheng-En Tsai, Yu-Chun Chang, Wen-Fung Liu, Feng-Chia University (Taiwan)

This paper proposed a liquid-index sensor based on a tapered-fiber Bragg grating whose surrounding liquid-index variation by varying the liquid different concentrations to cause the change of grating reflection spectrum and then to obtain the liquid index.

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14:30 - 14:45 Award Candidate (Paper Competition)
Manuscript ID.  0456
Paper No.  2023-FRI-S0901-O005
Yi-Jhen Li Gas Pressure Sensor Based on a Fiber Bragg Grating
Yi-Jhen Li, Wei-Chen Li, Wen-Fung Liu, Feng Chia University (Taiwan)

A novel small-scale high-sensitivity gas pressure sensor based on a fiber grating is proposed in this paper. The sensing structure is to utilize the plastic material cavity to apply the gas pressure on a thin-metal diaphragm glued on a fiber grating to result in the grating wavelength shift with a nice sensitivity of 0.13642 nm/psi and an excellent repeatability.

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14:45 - 15:00 Award Candidate (Paper Competition)
Manuscript ID.  0367
Paper No.  2023-FRI-S0901-O006
Rohit Gupta Enhancing Sensitivity in Plasmonic Biosensors through Voltage
Rohit Gupta, Anuj Chauhan, Hao-Fang Peng, Graduate Institute of Photonics and Optoelectronics (Taiwan); Jian-Jang Huang, Graduate Institute of Photonics and Optoelectronics (Taiwan), Department of Electronics Engineering (Taiwan)

Abstract: We designed and investigated a novel optical biosensor based on a hybrid plasmonic and electrochemical phenomenon. The Surface Plasmon Resonance was generated from a thin layer of gold nanohole array on a glass substrate. Using C-Reactive Protein (CRP) as the target analyte, we tested our device for different concentrations and observed the optical response under various voltage bias conditions. We observed that SPR response is concentration-dependent and can be modulated by varying DC voltages or AC bias frequencies. For CRP concentrations ranging from 1 to 1000 μg/mL, we obtained a limit of detection for this device of 16.5 ng/mL.

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S9. Optical Sensing

Poster Session I
Friday, Dec. 1, 2023  13:30-16:30
Room: Building of Electrical Engineering (電機系館) (B1)
Award Candidate (Paper Competition)
Manuscript ID.  1016
Paper No.  2023-FRI-P0901-P001
Van-Dai Pham Ultrasensitive Detection of NT-proBNP and Cardiac Troponin I Via Upconversion Nanoparticle Immunoassay Based on Resonant Waveguide Grating
Van-Dai Pham, Yen-Ta Tseng, Lai-Kwan Chau, Michael WY Chan, Hung-Chih Kan, Jiunn-Yuan Lin, Chia-Chen Hsu, National Chung Cheng University (Taiwan)

A sandwich-type immunoassay for simultaneous detection of low-concentration of cardiac troponin I (cTnI) and N-terminal pro-brain natriuretic peptide (NT-proBNP) was developed by integrating two types of upconversion nanoparticles (UCNPs) with a low refractive index resonant waveguide grating (RWG). Under resonant excitation, the local electric field is enhanced atop the RWG leading to extremely high intensity of UCL, resulting in improving the detection sensitivity of the immuno-biosensor. The limit of detection of the biosensor is 0.76 fg·mL-1 for cTnI, and 0.98 fg·mL-1 for NT-proBNP, much lower than the serum cut-off value of 30 pg·mL-1 for cTnI and 450 pg·mL-1 for NT-proBNP.

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Award Candidate (Paper Competition)
Manuscript ID.  1062
Paper No.  2023-FRI-P0901-P002
Chin-Wei Chang Multi-Wavelength Metalens for Compact Wavefront Sensor
Chin-Wei Chang, Li-Ting Fang, Pin Chieh Wu, National Cheng Kung University (Taiwan)

Traditional Shack-Hartmann wavefront sensors are typically constructed with bulky components, resulting in their weight and the occurrence of chromatic aberration. In contrast, utilizing a metalens not only reduces the physical size but also eliminates chromatic aberration, making it suitable for multi-wavelength wavefront sensing. In this work, we developed a multi-wavelength metalens capable of simultaneously operating at three different wavelengths for compact wavefront sensor application.

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Award Candidate (Paper Competition)
Manuscript ID.  0799
Paper No.  2023-FRI-P0901-P003
You-Ren Chen Terahertz Metamaterial Gas Sensor Based on Perovskite Membrane
You-Ren Chen, Pei-Jung Wu, Jing-Ting Hung, National Taiwan Normal University (Taiwan); Cho-Fan Hsieh, Industrial Technology Research Institute (Taiwan); Chii-Rong Yang, National Taiwan Normal University (Taiwan); Chan-Shan Yang, National Taiwan Normal University (Taiwan), National Cheng Kung University (Taiwan)

In this study, we designed a split-ring resonator metamaterial for gas sensing of the nitric oxide (NO) in the terahertz frequency range (resonating at 0.257 THz). To further enhance gas absorption, a thin film composed of ZnTiO3 and reduced graphene oxide (rGO) was applied on the surface of the metamaterial. By sintering ZnTiO3 powder at various temperatures, the sensitivity of this device (ΔT/T) was successfully increased from 2% to 16.4%. This material holds promising potential for future developments in monitoring and wearable devices.

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Award Candidate (Paper Competition)
Manuscript ID.  1012
Paper No.  2023-FRI-P0901-P004
Hung-Chang Kuo Phosphorylated Tau Protein Immunosensor by Enhancing Tm3+-doped Upconversion Luminescence on Low Refractive Index Resonance Waveguide Grating
Hung-Chang Kuo, Yen-Ta Tseng, Wen-Hsuan Wu, Lai-Kwan Chau, Chia-Chen Hsu, National Chung Cheng University (Taiwan)

Peripheral blood phosphorylated Tau (p-Tau) protein is one potential biomarker of Alzheimer disease detection. However, the concentration of p-Tau in bloodstream is extremely low (0.09 pg/mL). Tm3+-doped upconversion nanoparticle (Tm3+-UCNP) has fascinating upconversion luminescence (UCL) properties and be utilized to biosensing, usually sub nano-molar level. Here we proposed a low-refractive index resonance waveguide grating (low-RWG) array chip, which integrated 793 nm laser that significantly enhanced Tm3+-UCNP immunosensing to sub femto-molar level. Results showing extremely low limit of detection (LOD) of 0.57 fg/mL. A model study of immunosensor targeting p-Tau181 on the low-n RWG chip is proposed.

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Award Candidate (Paper Competition)
Manuscript ID.  0988
Paper No.  2023-FRI-P0901-P005
Ming-Jung Tai Fully printed high performance SPR Biosensors based on two-dimensional materials
Ming-Jung Tai, Nan-Fu Chiu, National Taiwan Normal University (Taiwan)

The traditional SPR biosensor uses two-dimensional materials to enhance the sensitivity, but the time is too long to immobilize material enhanced sensitivity on the chip quickly, and a linker is required. Usually linker is a modified functional group between metal and two-dimensional sensing material. The whole process performance is low. In this experiment, graphene is mixed with toner and printed directly on copper foil with a laser printer. The results show that get more obvious character of graphene after printing, which provides a fast and high performance method for immobilized biosensors.

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Award Candidate (Paper Competition)
Manuscript ID.  0568
Paper No.  2023-FRI-P0901-P006
Tzu-Chieh Lin A Photothermal Fiber Fabry–Pérot Interferometer Based on a Polymer Mixed Submicron Metal Particles
Tzu-Chieh Lin, Chang-Yuan Chan, Lun-Yu Lai, Chia-Yu Chang, Cheng-Ling Lee, National United University (Taiwan)

This study presents a photothermal fiber Fabry–Pérot interferometer (PTFFPI) that is fabricated by a polymer mixed submicron metal particles (PSMP). The proposed PTFFPI-PSMP was heated by a LD with a wavelength of 980nm and an excellent photothermal characteristic was achieved. Based on the experimental results, the device can be successfully heated by laser due to absorption improvement by the polymer mixed metal particles. The LD heating process can achieve a steady-state high temperature (T) to shift the interference wavelength fringes of the PTFFPI-PSMP. Due to the high thermal expansion of polymer, the proposed PTFFPI-PSMP can have a high sensitivity.

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Award Candidate (Paper Competition)
Manuscript ID.  0942
Paper No.  2023-FRI-P0901-P007
Cheng-Yu Lee Piezo bender controller for precise optical dispersion compensation based on single-shot optical interferometry
Cheng-Yu Lee, Jui-Chi Chang, Chia-Yuan Chang, National Cheng Kung University (Taiwan)

Ultrafast lasers concentrate the energy with a duration of several tens to hundreds of femtoseconds. In practical applications, the optical dispersion broadens the laser pulse width and spreads the energy in time, thereby reducing the peak power. Accordingly, the present study develops a piezo bender-based pulse compressor to compensate for this dispersion effect and restore the laser pulse width. Due to hysteresis and creep effects, the piezo bender is unable to maintain a stable shape over time and the compensation effect is gradually degraded. So, this study further proposes a single-shot modified laterally sampled laser interferometer to solve this problem.

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Award Candidate (Paper Competition)
Manuscript ID.  0904
Paper No.  2023-FRI-P0901-P008
Bing-Wei Chen A Fiber Fabry–Pérot Interferometer with an Ultra-short Cavity based on Splicing a Tilted Hollow Core Fiber
Bing-Wei Chen, Cheng-Ling Lee, Hsu-Hui Chou, Yi-Kai Chiu, National United University (Taiwan)

We developed an ultra-short cavity hollow-core fiber (HCF) Fabry–Pérot Interferometer (HCFFPI) based on splicing a tilted HCF to achieve the measurement of thermo-optic coefficient (TOC) of liquids. Based on fusion splicing an extremely short section (<10um) of slant cleaving HCF between two fibers, a very tiny gap can be formed to ensure that the liquids can flow into the short cavity. The TOCs of DI water, Ethanol, and Cargille liquid (nD=1.33) can be accurately determined by the proposed approach to predict it would have a great advantage for effectively and precisely measuring optical parameters of liquids in picoliters volume.

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Award Candidate (Paper Competition)
Manuscript ID.  0202
Paper No.  2023-FRI-P0901-P009
Chun-Yen Chien Surface Plasmon Resonance Biosensor Based On Hot-Electrons Through Schottky Nanodiode
Chun-Yen Chien, Chao Wang, Tzu-Heng Wu, Chii-Wann Lin, National Taiwan University (Taiwan)

In our experiment, we designed a Schottky barrier surface plasmon resonance sensor based on a metal-dielectric-metal structure. The Schottky barrier filters out the noise and improves the sensor design. We established the device fabrication process, including design, debugging, and fabrication, the measurement system, and conducted device testing. Additionally, we analyzed and compared the I-V curves of fabricated and standard samples. Furthermore, the optical characteristics under various incident angles are simulated and measured to demonstrate the surface plasmon resonance (SPR) effects.

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Award Candidate (Paper Competition)
Manuscript ID.  0723
Paper No.  2023-FRI-P0901-P010
Ching-Kang Chen High precision chaos lidar using broad-bandwidth waveforms
Ching-Kang Chen, Fan-Yi Lin, Institute of Photonics Technologies (Taiwan)

We utilize a semiconductor laser with optical feedback to generate chaos waveforms with broad-bandwidths for lidar applications. By calculating the lags difference through cross-correlation functions, we establish a correlation-based chaos LiDAR system. We study the bandwidth and signal-to-noise ratio and, their impact on the ranging precision. We find that, with the broad-bandwidth waveforms, LiDAR system with higher precision and exceptional anti-interference capabilities can be simultaneously achieved.

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Award Candidate (Paper Competition)
Manuscript ID.  0480
Paper No.  2023-FRI-P0901-P011
Chi-En Chen A New Approach to Edge Breakdown Prevention: Step-Attached Guard Ring for Avalanche Photodiodes
Chi-En Chen, Natchanon Prechatavanich, Chao-Hsing Wu, National Taiwan University (Taiwan)

This study introduces a novel step-attached guard ring structure to address edge breakdown effects in InGaAs/InP planar avalanche photodiodes. This innovative approach reduces the edge electric field up to 10.5% and confines breakdown occurrences to the center of the multiplication area.

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Manuscript ID.  0201
Paper No.  2023-FRI-P0901-P012
Kun-Rong Lin Response Current Enhancement of Ag/n-Si Schottky Diode Photodetector through Geometric Structures
Kun-Rong Lin, Yao-Han Dong, Ching-Fuh Lin, National Taiwan University (Taiwan)

A silicon-based device fabricated using Schottky barrier demonstrates that different structural designs modify the surface plasmon resonance, resulting in varying resonance intensity and spatial distribution of the electric field. By hot-carrier diffusion, this device achieves a better infrared light response and amplifies specific wavelength of signals. The device with the newly-designed microstructure exhibits a 2.14-fold enhancement effect with the incident light at 5.3 µm under the same incident light intensities.

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Manuscript ID.  0385
Paper No.  2023-FRI-P0901-P013
Wei-Chen Li Highly Sensitive Pressure Sensor Based on Bragg Fiber Gratings
Wei-Chen Li, Shian-Ming Liu, Feng Chia Universiy (Taiwan); Ming-Yue Fu, Air Force Academy (Taiwan); Wen-Fung Liu, Feng Chia Universiy (Taiwan)

In this paper, we propose a novel fiber optic pressure sensor using a fiber grating
combining with a special packaging structure. Its working principle is based on the fact that
the grating wavelength shift is proportional to the applied pressure, and a fiber grating etching
process is used to increase the sensitivity of the sensor.

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Manuscript ID.  0599
Paper No.  2023-FRI-P0901-P014
Ming-Hsien Li Synthesis of colloidal CsPbBr3 nanoplates for fabrication of perovskite scintillators via ultrasonic spray coating
Kai-Hsiang Hsu, National Chi Nan University (Taiwan); Kuo-Wei Huang, National Cheng Kung University (Taiwan), Industrial Technology Research Institute (Taiwan); Peter Chen, National Cheng Kung University (Taiwan); Ming-Hsien Li, National Chi Nan University (Taiwan)

In this work, we prepare cesium lead bromide (CsPbBr3) nanoplatelets (NPLs) by the co-precipitation (CPT) method, which is a simple route to mass-produce nanocrystals under ambient condition. By regulating the molar ration between Cs- and Pb-based precursor, the colloidal CsPbBr3 NPLs are successfully synthesized. Subsequently, the CsPbBr3 NPLs are redispersed in toluene to form a colloidal solution for ultrasonic spray-coating of perovskite film as an X-ray scintillator, whose thickness is well-controlled by the spray-coating cycles. Eventually, a CsPbBr3 perovskite film with a thickness of 553 μm is fabricated to deliver a high X-ray induced radioluminescence.

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Manuscript ID.  0049
Paper No.  2023-FRI-P0901-P015
Du-Ting Cheng Enhancing Responsivity in Silicon-Based Photodetectors for Mid-IR Detection
Du-Ting Cheng, Po-Hsien Chiang, Ching-Fuh Lin, National Taiwan University (Taiwan)

Due to the rapid decay characteristics of hot carriers, this study discusses the excitation positions of hot carriers in silicon-based (Si-based) photodetectors to bring the excited carriers closer to the metal/semiconductor interface. This approach aims to increase the injection efficiency of hot carriers, thereby enhancing the responsivity of the photodetector in the mid-infrared (MIR) region.

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S9. Optical Sensing

Optical Sensing II
Friday, Dec. 1, 2023  15:15-17:30
Presider: Prof. Wen-Fung Liu (Feng Chia University, Taiwan) Prof. Nai-Hsiang Sun (I-Shou University, Taiwan)
Room: 92371 (3F)
15:15 - 15:45
Manuscript ID.  0647
Paper No.  2023-FRI-S0902-I001
Invited Speaker:
Morten Ibsen
Optical Fibre Sensor Technologies for High-Speed Monitoring of Rapid Chemical Reactions and Detonation Events
Morten Ibsen, University of Southampton (UK)

Fibre Bragg gratings (FBGs) are well-established all-fibre devices capable of monitoring a range of parameters in various configurations with high precision incl., strain, temperature, and pressure. Due to the ability to accurately design the phase and amplitude response from FBGs into their spatial refractive index profile, and because of the flexibility to precisely control their length, they can also be used as devices to help correct signal distortion encountered in optical transmission systems resulting from, for example, timing- jitter and chromatic dispersion. The precise control of length can also be utilised to monitor and determine perturbations continuously along their length, in real-time. One such application, demonstrated and researched more extensively in recent years, is the ability to monitor and determine the velocity of rapid chemical reactions and detonation events with a very high degree of spatial precision.

The speed at which shock-fronts advance through a material – the velocity of reaction/detonation – is an important measure for assessing the performance and characteristic behaviour of the material. Optical fibre sensors, incl., FBGs, are proving an excellent diagnostic tool for this purpose too, and because of their small size, they can be used as embedded probes offering minimal physical invasiveness into the compounds and materials being tested. In this talk we will review and discuss our research in this area and discuss probes based on both uniform and chirped FBGs, bare fibres, and rare-earth doped fibres. We will discuss how these probes are designed and discuss the advantages and limitations of each of them depending on the exact application and system they are designed for. We will show that using a new approach we developed based on uniform FBGs it is possible to achieve spatial uncertainties below ±10m when determining the position of the perturbation on the FBGs during high-speed events with velocities in excess of ~6mm/s (6km/s).

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15:45 - 16:00 Award Candidate (Paper Competition)
Manuscript ID.  0108
Paper No.  2023-FRI-S0902-O001
Jui-Hsiang Yen Real Time Roughness Measurement with Big Data Analysis of BRDF Scattering Pattern
Jui-Hsiang Yen, Pin-Jyun Hou, Cheng-Huan Chen, National Yang Ming Chiao Tung University (Taiwan)

Scattering is the most common phenomenon in optics, but it has not been widely adopted in online real-time scenarios. In view of the potential for real-time intelligent scattering detection, this paper proposes a conceptual structured light scattering detection device.

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16:00 - 16:15 Award Candidate (Paper Competition)
Manuscript ID.  0452
Paper No.  2023-FRI-S0902-O002
Siddharth Rana Highly Sensitive X ray Photodetector based on Zinc Gallium oxide
Siddharth Rana, National Yang Ming Chiao Tung University (Taiwan), Indian Institute of Technology Delhi (India); Shang jui chui, National Synchrotron Radiation Research Center (Taiwan); Jitendra Pratap Singh, Indian Institute of Technology Delhi (India); Ray Hua Horng, National Yang Ming Chiao Tung University (Taiwan)

An epilayer of Zinc Gallium oxide with a thickness of 100 nm was successfully grown on a c-plane sapphire substrate using the metalorganic chemical vapor deposition technique. The performance of the designed photodetectors was evaluated by measuring the photocurrent under various bias voltages and distinct x ray flux intensities: ranging from 107 to 1011 counts per sec. Additionally, the transient response of the photodetector was examined. The findings revealed that these designed photodetectors exhibited higher sensitivity compared to detectors based on gallium oxide.

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16:15 - 16:30 Award Candidate (Paper Competition)
Manuscript ID.  0529
Paper No.  2023-FRI-S0902-O003
Devesh Barshilia Waveguide Nanogold linked immunosorbent assay biosensor as key enabler for early sepsis diagnosis
Devesh Barshilia, Guo-En Chang, National Chung Cheng University (Taiwan)

We demonstrated neoteric point of care fulfilling waveguide nanogold linked immunosorbent assay optical biosensor to endow ultra-sensitive and prompt detection of crucial biomarkers such as Procalcitonin. The proposed sensor reveals excellent biosensing performance with a negligible low non-specific adsorption, low record LOD of value 48.7 fg/mL and short detection time of nearly 9 minutes.

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16:30 - 16:45 Award Candidate (Paper Competition)
Manuscript ID.  0716
Paper No.  2023-FRI-S0902-O004
CHih-Hao Chang Pulsed lidar base on gain-switched semiconductor laser with a recirculating delay lines interferometer
CHih-Hao Chang, Fan-Yi Lin, Institute of Photonics Technologies (Taiwan)

This study focuses on generating random modulated pulses using a gain-switched semiconductor laser with a recirculating delay lines (RDL) interferometer designed for pulsed lidar application. The RDL structure's multi-interference bestows the random modulate pulse with high modulation and low-correlation characteristics, well-suitable for pulsed lidar unambiguity ranging and jamming resistance. By adjusting laser bias currents and RDL delay lengths, we assess two distinct scenarios: one optimizing precision for 3D reconstruction, and another emphasizing low correlation for anti-jamming. Finally, we successfully demonstrate 3D imaging, showcasing exceptional precision in capturing intricate detail, such as the Marseille statue.

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16:45 - 17:00 Award Candidate (Paper Competition)
Manuscript ID.  0777
Paper No.  2023-FRI-S0902-O005
Gajendra Suthar, National Yangming Chiaotung University (Taiwan); Chih-Wei Chu, Academia Sinica (Taiwan); Fang Chung Chen, National Yangming Chiaotung University (Taiwan)

Photomultiple narrowband organic photodiodes (PM-NOPDs) are fabricated using a
planar heterojunction structure. The bottom PM6 layer selects excitons, while the top P3HT: PC70BM layer acts as a photomultiplication layer. The device functions with electron tunneling injection caused by hole accumulation near the Ag electrode. Because only selected exciton undergoes photomultiplication, the detector exhibits a high external quantum efficiency of 5840%, a narrowband peak at 680 nm, and a spectral response of over 30 A/W at -5 V. This approach allows for the fabrication of high-performance PM-NOPDs with low bias, low noise, and high speed.

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17:00 - 17:15 Award Candidate (Paper Competition)
Manuscript ID.  0975
Paper No.  2023-FRI-S0902-O006
Thanh Duy Cu Designing Ultrahigh-Figure-of-Merit Refractive Index Sensors: Leveraging Thin-Film Properties and Guided-Mode Resonance
Thanh Duy Cu, Hong-Wei Wu, Chen-Cheng Kuo, National Central University (Taiwan)

Guided mode resonance (GMR) gratings are gaining traction in sensing applications. This study outlines an optimal, easy-to-fabricate one-dimensional GMR grating with enhanced performance using thin films. Its design boosts the sensing performance with figure of merit values reaching hundreds of thousands. Simulations show an optimized grating with a sensitivity of 252 and a narrow bandwidth of 0.0002 nm. Remarkably, at a 50° incident angle, its figure of merit reaches 839,666, outperforming traditional GMR sensors significantly. Simulations at 60° and 70° incident angles expand its applicability, offering insights into the sensor's varied performance scenarios.

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17:15 - 17:30 Award Candidate (Paper Competition)
Manuscript ID.  0781
Paper No.  2023-FRI-S0902-O007
Zi Wang BOTDA integrated Ф-OTDR Distributed Fiber Sensing System for Simultaneous Multi-Parameter Monitoring
Zi Wang, Yang-En Zou, Chen-Yin Guo, Shien-Kuei Liaw, National Taiwan University of Science and Technology (Taiwan); Ya-Mei Yang, Bo-Heng Lee, Industrial Technology Research Institute (Taiwan)

In this article, the integration of the brillouin optical time-domain analysis (BOTDA) and the phase-sensitive optical time domain reflectometry (Ф-OTDR) distributed fiber sensing systems is discussed. By combining the two systems and sharing common instruments, the cost of the experiments is minimized, enabling the sensing of three parameters: temperature, strain, and vibration on the same 18.7 km fiber.

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S9. Optical Sensing

Optical Sensing III
Saturday, Dec. 2, 2023  10:45-12:00
Presider: Prof. Hsin-Ying Lee (National Cheng Kung University, Taiwan) Prof. Day-Shan Liu (National Formosa University, Taiwan)
Room: 92371 (3F)
10:45 - 11:15
Manuscript ID.  1091
Paper No.  2023-SAT-S0903-I001
Invited Speaker:
Ching-Ting Lee
Gallium oxide-based materials and ultraviolet phototransistors
Ching-Ting Lee, National Cheng Kung University (Taiwan)

Various Al atomic contents were doped into HfGaO and were deposited on sapphire substrates at approximately 80 K by using a vapor cooling condensation system. By using energy-dispersive spectrometer measurements, it was found that the Al atomic content in the AlHfGaO films increased with an increase of the deposition temperature of an Al2O3-powder- loaded tungsten boat. AlHfGaO films with an Al atomic content of 3.16% had a higher optical bandgap energy (5.36 eV) than did undoped HfGaO films (5.14 eV). Increasing the Al atomic content reduced the Ga atomic content; however, the Hf atomic content was similarly unchanged, which revealed that the Al dopants substituted Ga atoms. By using X-ray photoelectron spectroscopy measurements, it indicated that the oxygen vacancy defects in HfGaO films were suppressed by doping with Al to produce AlHfGaO films. These results verified that the Al doping of HfGaO films could effectively modify the bandgap energy and could suppress oxygen vacancy defects.

The AlHfGaO films with various Al atomic contents were used as the channel layers of ultraviolet phototransistors. The undesired oxygen vacancy defects residing in the AlHfGaO films could be compensated and suppressed by doping Al dopants. In addition to modulate the cutoff wavelength of the ultraviolet phototransistors by doping various Al atomic contents in the AlHfGaO channel layers, the performances of the resulting phototransistors could be improved due to the reduction of the amount of oxygen vacancy defects. Compared with the phototransistors using the HfGaO channel layer, when the phototransistors using the AlHfGaO channel layer with an Al atomic content of 3.16%, its cutoff wavelength was shifted from 240 to 225 nm, and the detectivity was improved from 1.62 × 1012 to 3.16 × 1012 Jones. Besides, the photoresponse speed was also improved by increasing Al atomic content in the AlHfGaO channel layer of the phototransistors.

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11:15 - 11:30
Manuscript ID.  0329
Paper No.  2023-SAT-S0903-O001
Chi Lok Wong Spectral-Phase Surface Plasmon Resonance Imaging Sensor
Chi Lok Wong, Chang Gung University (Taiwan)

we demonstrate a spectral-phase SPR imaging sensor. It probes the sensitive phase response at plasmonic resonance with stable spectral SPR image. In our design, surface plasmon excitation is placed inside a polarizer cavity with perpendicular polarization orientation. At resonance wavelengths, the phase related polarization orientation allows light to leave the polarizer cavity, which produces corresponding spectral profile at SPR image. In refractive index measurements, the sensor detected different concentrations of NaCl solutions and the sensor resolution was 8.4 x 10-6 RIU. The spectral-phase SPR imaging sensor can find potential applications in biosensing, chemical sensing and drug discovery.

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11:30 - 11:45
Manuscript ID.  1077
Paper No.  2023-SAT-S0903-O002
Shih-Hsiang Hsu Silicon-based LiDAR Chip for Velocity and Distance Characterization through Frequency-Modulated Continuous Wave
Shih-Hsiang Hsu, National Taiwan University of Science and Technology (Taiwan)

A Mach-Zehnder direction coupler with a 50:50 splitting ratio in a silicon platform
demonstrates frequency-modulated continuous wave (FMCW) characterizations in velocity and
distance through Hilbert transform resampling. The measurement speed is 200 mm/second with
a 0.2 mm/second standard deviation. The final most extended detection range can demonstrate
1052.5 cm distance with a standard deviation of 0.006 cm and a full width at half maximum
(FWHM) of 0.0043 cm using 1.25 mega-sample-rate data acquisition.

  Preview abstract
11:45 - 12:00
Manuscript ID.  0410
Paper No.  2023-SAT-S0903-O003
Shan-Jui Hsu Fiber Bragg grating guitar pitch corrector
Shan-Jui Hsu, Yu-Chun Chang, Wei-Chen Li, Wen-Fung Liu, Feng Chia University (Taiwan)

This paper presents a fiber Bragg grating vibration sensor for tuning guitars to analyze the variations in non-stationary signals using fast Fourier transform (FFT) and continuous wavelet transform (CWT).

  Preview abstract

S9. Optical Sensing

Optical Sensing IV
Saturday, Dec. 2, 2023  13:00-15:00
Presider: Prof. Chin-Wei Wu (National Yunlin University of Science and Technology, Taiwan) Prof. Yin-Wen Lee (National Taipei University of Technology, Taiwan)
Room: 92371 (3F)
13:00 - 13:30
Manuscript ID.  0655
Paper No.  2023-SAT-S0904-I001
Invited Speaker:
Ming-Che Chan
Contrast enhancement in femtosecond laser based optical sensing
Ming-Che Chan, National Yang Ming Chiao Yung Univerity (Taiwan)

The contrast or signal-to-noise ratio (SNR) the most crucial and fundamental parameter in an optical sensing system. It’s immediately related with the quality of sensing. In an imaging system, with
a better image contrast/SNR, the imaging system can be performed at a faster frame rate or
deeper tissue locations without compromising image quality.
In this talk, the recent studies of our group on the contrast enhancement in femtosecond laser
based optical sensing/imaging systems will be presented by the higher-order-modulations or the
carrier pulse-stretching. These optical or electrical-optical methods will largely enhance the contrast in the coherent and in-coherent nonlinear laser scanning microscopes. Significant background reduction together with the SNR enhancement will presented in the second-harmonic generation microscopy on collagen fibrils or the two-photon fluorescence microscopy on whole drosophila brains.The fundamental working principles, experimental design, various results on the
femtosecond sensing with enhanced contrast, and the future perspective/possibility for these
technique will be also presented.

  Preview abstract
13:30 - 13:45
Manuscript ID.  0288
Paper No.  2023-SAT-S0904-O001
Wei-Cheng Hsia Investigation of Ga2O3:Al deep ultraviolet photodetectors
Wei-Cheng Hsia, Ta-Chun Cheng, Hsin-Ying Lee, National Cheng Kung University (Taiwan); Ching-Ting Lee, National Cheng Kung University (Taiwan), Yuan Ze University (Taiwan)

An aluminum-doped gallium oxide (Ga2O3:Al) active layer of metal-semiconductor-metal ultraviolet C photodetectors (MSM UVC-PDs) was deposited by a plasma-enhanced atomic layer deposition (PE-ALD) system. Compared with the Ga–O bond, the Al–O bond was more easily formed, which suppressed the generation of oxygen vacancies in the Ga2O3:Al films. Accordingly, under bias of 10 V, the optimal performance of the resulting UVC-PDs with Al content of 1.88 at.% could be achieved to photocurrent/dark current ratio of 7.8×10^4, responsivity of 0.5 A/W, UV-VIS rejection ratio of 3.6×10^5, and the detectivity of 8.3×10^13 Jones.

  Preview abstract
13:45 - 14:00
Manuscript ID.  0922
Paper No.  2023-SAT-S0904-O002
Sourabh Roy Speckle pattern-based classification of different polarized LG beams using machine learning
Nikhil Vangety, Pooja P M, Sourabh Roy, NIT Warangal (India)

In this work, we present an effect of polarization on the machine-learned, speckle pattern-based Laguerre Gaussian (LG) beam classification. Specifically, four different polarization states are explored namely, linear +45, linear +135, right circular, and left circular; and their effect on the classification performance of a simple machine learning model. The classification accuracies >80% are achieved for each polarization state corresponding to different LG modes. This proves the efficacy of machine learning models for recognizing the speckle patterns of LG modes which are polarization encoded and might be useful in real-world applications for efficient OAM beam multiplexing in free space communication.

  Preview abstract
14:00 - 14:15
Manuscript ID.  0027
Paper No.  2023-SAT-S0904-O003
Rispandi Rispandi Development of New Colorimetric Change Optical CO2 Sensor Using Phenol Red and CdSe/ZnS Quantum Dots Embedded in Polymer Matrix.
Rispandi Rispandi, Cheng-Shane Chu, Ming Chi University of Technology (Taiwan)

This work developed the colorimetric change optical CO2 sensor using the pH indicator phenol red and
CdSe/ZnS quantum dots embedded in polymer matrix. All of the sensing film materials are coated on the surface
of filter paper. Meanwhile, from the investigation of emission spectra exposed of CdSe/ZnS quantum dots will
increase as the CO2 concentration increased. The experiment results show the optical CO2 sensor has a
sensitivity of 1.8 and it can be applied to environmental applications.

  Preview abstract
14:15 - 14:30
Manuscript ID.  0301
Paper No.  2023-SAT-S0904-O004
Chia-Chin Cheng Microwave Spectroscopy Using a Quasi-Optical System for Plastic Plate Distinguishment
Chia-Chin Cheng, Chia-Ming Mai, Che-Ming Wu, NATIONAL TSING HUA UNIVERSITY (Taiwan)

This study introduces a quasi-optical system developed for material characterization. The system, based on the quasi-optical principle, is operated using a Vector Network Analyzer (VNA). We successfully measured the optical properties of various plastic plates in the millimeter-wave region, specifically from 8 GHz to 12 GHz. The experimental results have been compared with existing data to validate the accuracy and efficacy of the proposed quasi-optical system.

  Preview abstract
14:30 - 14:45
Manuscript ID.  0925
Paper No.  2023-SAT-S0904-O005
Yu-Cheng Wu Photoreduction and Self-Assembly of Gold Nanoparticles for Surface-Enhanced Raman Scattering in Biomolecular Detection
Shao-Quan Zhang, Yu-Cheng Wu, National Cheng Kung University (Taiwan); Wen-Huei Chang, National Pingtung University (Taiwan); Zi-Yi Yang, Chun-Hung Lin, National Cheng Kung University (Taiwan)

This work demonstrates a simple approach for the direct synthesis of gold nanoparticles (AuNPs) through photoreduction and the self-assembly of AuNPs on APTES-functionalized surfaces as the substrates for surface-enhanced Raman spectroscopy. We investigated the impact of various reduction parameters, as well as different sizes of AuNPs, on the optical behavior of the Raman intensity. Finally, we applied the SERS substrates to detect MG and biomolecular. Our approach not only involves simple processing steps but is also cost-effective, allowing for the production of more than tens of samples at once.

  Preview abstract
14:45 - 15:00
Manuscript ID.  0927
Paper No.  2023-SAT-S0904-O006
Min-Han Kuo Fabrication of Inverted Pyramid Substrates Utilizing Nanosphere Lithography for Surface-Enhanced Raman Scattering-based Detection of Microplastics
Jin-Jie Liang, Min-Han Kuo, National Cheng Kung University (Taiwan); Wen-Huei Chang, National Pingtung University (Taiwan); Chun-Hung Lin, National Cheng Kung University (Taiwan)

This study demonstrates a simple approach for the detection of polystyrene microplastics using Raman spectroscopy. This method involves utilizing compact monolayer polystyrene nanospheres to create an inverted pyramid structure. The SERS (surface-enhanced Raman spectroscopy) substrates were fabricated through nanoimprint and deposition of a gold film using electron beam evaporation. Various SERS sensing approaches to enhance the Raman signal were explored. This study offers a simple and mass-produced method for the detection of microplastics.

  Preview abstract

S9. Optical Sensing

Poster Session II
Saturday, Dec. 2, 2023  13:30-16:30
Room: Building of Electrical Engineering (電機系館) (B1)

Manuscript ID.  0731
Paper No.  2023-SAT-P0902-P001
Chien-Hsing Chen Fiber-optic sensor based on dual nanoplasmonic structures
Chien-Hsing Chen, National Pingtung University of Science and Technology (Taiwan); Chang-Yue Chiang, National Yunlin University of Science and Technology (Taiwan); Cheng-Ling Lee, National United University (Taiwan); Jian-Neng Wang, National Yunlin University of Science and Technology (Taiwan)

This study develops a fiber-optic sensor based on dual nanoplasmonic structures for refractive index sensing by a CO2 laser engraving. Gold sphere nanoparticles and silver sphere modified the sensor based on dual nanoplasmonic structures in two different fiber sensing zones. This type of sensor has shown the capacity to simultaneously sense two different channels of localized surface plasmon resonance signals with a relatively high refractive index sensitivity.

  Preview abstract

Manuscript ID.  0052
Paper No.  2023-SAT-P0902-P002
Bo-Heng Chen Enhancing the Mid-Infrared Photoelectric Response on the Silicon-Based Photodetector via Adjusting the Metal Deposition Rate
Bo-Heng Chen, Ting-Kai Chang, Ching-Fuh Lin, National Taiwan University (Taiwan)

In this study, the 10 nm silver (Ag) was deposited with various deposition rate to investigate the coverage area and the photoelectric response of the silicon-based (Si-based) photodetector at 3.46 µm mid-infrared (MIR) wavelength. However, the response voltage was increased from 0.22 V to 0.88 V (i.e. 4 times enhanced) while the deposition rate reduced. The illuminated area of the metal layer increased when 10 nm Ag deposited at deposition rate 0.1 Å/s, which could generate more hot carriers emitted from metal to semiconductor by the internal photoemission absorption (IPA) mechanism to cause the response voltage enlarged.

  Preview abstract

Manuscript ID.  0229
Paper No.  2023-SAT-P0902-P003
Wen-Chi Hsu Disposable PEN Based Container for Liquid Concentration Measurement
Ruey-Ching Twu, Cheng-Yu Cho, Wen-Chi Hsu, Chang-Hui Chen, Southern Taiwan University of Science and Technology (Taiwan)

A disposable PEN based container was fabricated successfully for the liquid concentration variation measurement in a common path heterodyne interferometer. The best measurement resolutions of saline concentration and RI variations are 48 ppm and 8.7×10-6 RIU, respectively.

  Preview abstract

Manuscript ID.  0616
Paper No.  2023-SAT-P0902-P004
Chia-Cheng Cheng Implementation of optical depth sensing technology
Chia-Cheng Cheng, Chih-Hsiung Lin, Kun-Huang Chen, Feng Chia University (Taiwan)

An optical depth sensing was developed in this study. This system is combined with Galileo telescope, micro-lens array, and sensor. The system has been verified its feasibility in the experiment and has the merits of easy to operate and not easily disturbed by external factors and is suitable for combining with various mobile phone lenses.

  Preview abstract

Manuscript ID.  0658
Paper No.  2023-SAT-P0902-P005
Chih-Hao Wang Modeling of Elliptical-Tube Cladding Structure for Negative Curvature Hollow-Core Fiber
Jung-Sheng Chiang, Chih-Hao Wang, Hsuan-Hung Yeh, Zi-You Zhou, Nai-Hsiang Sun, I-Shou University (Taiwan)

The guided modes of elliptical-tube cladding structure hollow-core fibers with different core diameters, thicknesses, and shapes of capillaries for capillary cladding designs by simulation are presented. The proper number of negative curvature ratios enhances fundamental mode power and the 8-capillary dual-elliptical cladding of NC-HCF is better than the single-elliptical capillary for transmission power.

  Preview abstract

Manuscript ID.  0383
Paper No.  2023-SAT-P0902-P006
Cheng-Fang Li Using Pix2Pix GAN technology for signal demodulation in Michelson interferometer sensors
Xin-Jie Liu, Cheng-Fang Li, Hsu-Chih Cheng, Chun-Ming Huang, National Formosa University (Taiwan)

Michelson interferometer (MI) sensor is a highly sensitive and versatile device with extensive applications in optics, fiber communications, temperature sensing, pressure sensing, gas detection, acceleration sensing, and optical signal modulation. However, traditional hardware demodulation techniques are subject to several limitations. In this paper, Using the deep learning model as a demodulation device for Michelson interferometer-based fiber optic signals without the need for complex demodulation circuits. After training and validating the Pix2Pix (P2P) GAN on a large dataset of source images and target vibration signals, the trained P2P GAN model can be used to demodulate vibration signals from the interference signal.

  Preview abstract

Manuscript ID.  0705
Paper No.  2023-SAT-P0902-P007
Ting-Kuan Lin Air-backed mandrel fiber-optic hydrophones design for distributed acoustic sensing
Ting-Kuan Lin, Yu-Han Hung, National Sun Yat-sen University (Taiwan); Chia-Ming Tsai, Tz-Shiuan Peng, National Chung-Shan Institute of Science and Technology(NCSIST) (Taiwan)

Fiber-optic hydrophones are widely used in marine science, military activities, and energy exploration due to their high sensitivity, immunity to electromagnetic interference, and ease of array formation. In recent years, low-frequency detection has become an important research subject for modern fiber-optic hydrophones. In this paper, we design an air-backed mandrel fiber-optic hydrophone and use COMSOL simulation software to investigate its acoustic pressure frequency response in underwater environment. The hydrophone achieves a sensitivity of -136dB (re rad/μPa) with a 3-dB frequency response from 1Hz to 1kHz

  Preview abstract

Manuscript ID.  0802
Paper No.  2023-SAT-P0902-P008
Po-Kai Chen All-Fiber Mach-Zehnder Interferometer Sensor with Tunable Metal Ion Detection Using Electrostatic Self-Assembly
Po-Kai Chen, Bo-Ming Su, Yu-Feng Lo, Shug-June Hwang, National United University (Taiwan)

We present a novel all-fiber Mach-Zehnder Interferometer (MZI) sensor developed by splicing hollow-core optical fiber (HOF) between two single-mode fibers (SMF). Utilizing dip coating and electrostatic self-assembly techniques, the fiber MZI was transformed into a metal ion-sensitive sensor. By adjusting the pH values of Chitosan (CS) and Polyacrylic acid (PAA) in the layer coating, we tuned its refractive index and observed distinct responses and variations to copper ions based on different pH values. This all-fiber MZI sensor demonstrates promising potential for diverse metal ion detection applications.

  Preview abstract

Manuscript ID.  1005
Paper No.  2023-SAT-P0902-P009
Yong-Ru Chen Non-Invasive Probing of Dynamic Ion-Distribution Profile by Novel Chromatic Confocal Microscope
Yong-Ru Chen, Chi-Sheng Hsieh, Wei-Shiuan Tseng, Ming-Che Chan, Hai-Ching Su, National Yang-Ming Chiao-Tung University (Taiwan)

We introduce an advanced optical design, chromatic confocal microscope with nanoscale optical sensitivity, dedicated to examining the spatial distribution of ions inside optical devices. The ions within organic films present in light-emitting electrochemical cells was utilized as a demonstration example. This innovative approach not only enhances our understanding of ion behaviors in such films but also can be applied to studies involving Li-ion batteries and micro-fluid channels, providing a versatile tool for various research arenas to delve deeper into the intricacies of ion interactions and movements.

  Preview abstract

Manuscript ID.  0459
Paper No.  2023-SAT-P0902-P010
Yu-Chun Chang The Hydrophone Based on Fiber Bragg Gratings
Yu-Chun Chang, Shian-Ming Liu, Wen-Fung Liu, I-Nan Chang, Feng-Chia University (Taiwan)

A novel fiber hydrophone is proposed for detecting acoustic-wave signals of underwater. The hydrophone consists of fiber Bragg grating, silicon thin-film, O-ring, and 3D print packaging-structure. The acoustic signal is obtained by means of a photodetector to transform the optical signal of grating-wavelength shift into the electronic signal.

  Preview abstract

Manuscript ID.  0269
Paper No.  2023-SAT-P0902-P011
Wen-Ching Hsieh High-k Gate Stack MOS UV Sensor
Fun-Cheng Jong, Southern Taiwan University of Science and Technology, , 1005, Taiwan (Taiwan); Wen-Ching Hsieh, Shao-Wei Lu, Yi-Xun Chen, You-Chen Zhou, Bo-Ting Li, Minghsin University of Science and Technology 30401, , Taiwan (Taiwan)

This report is to investigate the potential of using high-k gate stack MOS for UV image sensors (hereafter HKMOSUVS) with UV transparent high-k gate stack dielectrics and nanocrystalline conductive gates. We investigate the UV-induced inversion capacity CG measured at the low frequency (LF) capacitance-voltage curve of HKMOSUVS. By adjusting the LF, the HKMOSUVS's sensitivity can be modulated for both small and large signals. ITO gate conductor post-annealing process is used to optimize UV optical transmission. Overall, the use of HKMOSUVS with UV transparent nanocrystalline materials has the potential to the development of superior speed, sensitivity, and resolution UV image sensors.

  Preview abstract

Manuscript ID.  0618
Paper No.  2023-SAT-P0902-P012
Ming-Hsien Li Optically-switchable light valve by integrating liquid crystal cell with halide perovskite film
Chien-Hung Li, National Formosa University (Taiwan); Peter Chen, National Cheng Kung University (Taiwan); Ming-Hsien Li, National Chi Nan University (Taiwan); Hui-Chi Lin, National Formosa University (Taiwan)

In this work, we fabricate an optically-switchable light valve based on a liquid crystal (LC) cell integrated with a perovskite (PSK) photoactive film. The transmittance of LC/PSK cell can be modulated by the green laser beam without bias voltage via the light-induced thermal effect. The absorption of PSK film by the illumination of green laser results in heat, which affects the phase retardation of LC layer and the resultant transmittance of LC/PSK cell.

  Preview abstract

Manuscript ID.  0812
Paper No.  2023-SAT-P0902-P013
Mochamad Januar Fabry-Perot Claddings and Aluminum Nanoarrays for Achieving High-Q Plasmonic Resonators in Blue-to-UV Regimes
Mochamad Januar, Bei Liu, Chang Gung University (Taiwan); Kou-Chen Liu, Chang Gung University (Taiwan), Chang Gung Memorial Hospital (Taiwan)

This study addresses a critical gap in plasmonic surface lattice resonances (SLRs), which have traditionally been limited to longer wavelengths in the visible and near-infrared spectra. We introduce simple yet effective designs optimized for the blue-to-UV range. By leveraging Fabry-Perot mode amplifications and utilizing cost-effective spheroidal aluminum nanoarrays, we theoretically achieve a 42.3-fold increase in Q-factor at a wavelength of 403 nm. This Q-factor is tunable through adjustments to the superstrate cladding thickness. Comparative analyses demonstrate that our designs excel in blue-to-UV wavelengths, enabling higher-resolution biomolecular detection with smaller cross-sections and thereby broadening the empirical utility of SLRs.

  Preview abstract

Manuscript ID.  0090
Paper No.  2023-SAT-P0902-P014
S. H. Wu β-Ga2O3/Si p-n Heterojunction DUV Photodetectors on p-type Si Substrates by RF Magnetron Sputtering
S. H. Wu, C. K. Wang, Y. Z. Chiou, J. H. Huang, Southern Taiwan University of Science and Technology (Taiwan)

The n-β-Ga2O3/p-Si heterojunction deep ultraviolet (DUV) photodetectors were successfully fabricated by using RF magnetron sputtering. Optoelectronic properties were studied at various annealing temperatures. Improved crystalline quality was observed with higher annealing temperatures, particularly over 700 °C for β-Ga2O3 (110) phase. The device annealed at 900 °C exhibited the lowest oxygen vacancies. The device annealed at 800 °C showed optimal performance in terms of photo current, dark current, and responsivity.

  Preview abstract

Manuscript ID.  0842
Paper No.  2023-SAT-P0902-P015
Yu-Hong Liu Polymer Cholesteric Liquid Crystal- Interpenetrating Polymer Network Sensor for Alcohol Detection
Bhupendra Pratap Singh, Yu-Hong Liu, Shug-June Hwang, National United University (Taiwan)

We successfully developed a novel responsive polymer cholesteric liquid crystal interpenetrating polymer network (PCLCIPN) film with controlled porosity, serving as an optical sensor. Its capability to differentiate between methanol and ethanol in alcohol solutions was examined. By observing wavelength shifts in the transmission spectrum at various alcohol concentrations, the optical sensing performance of PCLCIPN was assessed. The central wavelength changes in the PCLCIPN transmission spectrum allowed for accurate discrimination of alcohol concentrations. Notably, the wavelength shift demonstrated a linear relationship with alcohol concentration, enabling precise quantitative analysis of the alcohol solutions.

  Preview abstract

Manuscript ID.  0502
Paper No.  2023-SAT-P0902-P016
Zi-Xiang Wen Lead-free inorganic halide perovskite thick films prepared by ambient spray-coating for X-ray detection
Yen-Ting Chen, Zi-Xiang Wen, Chen-Fu Lin, Peter Chen, National Cheng Kung University (Taiwan)

X-ray detection is a highly important detection in the medical field. In this research, we use the non-toxic metal element bismuth (Bi) to replace the lead element (Pb), then choose cesium bismuth halide perovskite derivative, combining the ambient large-area spray-coating to deposit the active layer for the X-ray detector. In this study, we use different process temperatures, two-step heating process, and annealing process to explore the film growth mechanism and measure the electrical properties under various considerations, then verify the influences of the preferred orientation of crystal planes on the electrical properties of the device.

  Preview abstract

Manuscript ID.  0096
Paper No.  2023-SAT-P0902-P017
Yao-Chin Wang Machine Learning-driven Innovations and Applications for Flexible Electronics
Yao-Chin Wang, Cheng Shiu University (Taiwan)

Machine learning (ML) is a powerful tool that can be used to drive innovation and applications in flexible electronics. ML can be used to design new materials, develop new manufacturing processes, and optimize the performance of flexible electronic devices. ML has been used to develop new types of flexible displays, batteries, and sensors. ML has also been used to develop new manufacturing processes for flexible electronics that are faster, more efficient, and more affordable. As a result of these advances, flexible electronics are becoming increasingly common in a wide range of applications, including wearable devices, smartphones, and medical devices.

  Preview abstract

Manuscript ID.  0009
Paper No.  2023-SAT-P0902-P018
Vincent Hsiao Identifying Chiral Resolution and Optical Activity of Organic molecules using Anisotropic Photoluminescence of Porous Silicon
Vincent Hsiao, Chih-Hsuan Hu, National Chi Nan University (Taiwan)

In this study, we investigated the potential of porous silicon (PSi) as a material for detecting the chirality and optical activity of organic molecules through its unique anisotropic photoluminescence (PL) properties. We systematically examined the anisotropic PL response of PSi to chiral and spiropyran molecules with different chemical structures and determined their chiral resolution and optical activity by measuring the polarization and intensity of the anisotropic PL. Our results showed that the use of an improved LED light source provided a higher resolution for chiral structures and significantly improved the discrimination of chiral molecules.

  Preview abstract

Manuscript ID.  0720
Paper No.  2023-SAT-P0902-P019
Chang-Yue Chiang Trace Determination of High Mobility Group Box 1 Using a Label-Free Fiber-Optic Localized Surface Plasmon Resonance Biosensor
Chang-Yue Chiang, National Yunlin University of Science and Technology (Taiwan); Chien-Hsing Chen, National Pingtung University of Science and Technology (Taiwan); Chin-Wei Wu, Jian-Neng Wang, National Yunlin University of Science and Technology (Taiwan)

We developed a facile method for the detection of high mobility group box 1 (HMGB1) using carboxymethyl dextran (CM-dextran) as a bridge molecule modified on the surface of gold nanoparticles combined with a fiber optic localized surface plasmon resonance (FOLSPR) biosensor. Under optimal conditions, the results showed that the FOLSPR sensor detected HMGB1 with a wide linear range , fast response (< 10 min), and a low detection limit of 43 pg/mL and high correlation coefficient values (R^2 = 0.998). Therefore, the present strategy provides a novel and convenient method for chemical and biochemical quantification and determination.

  Preview abstract

S9. Optical Sensing

Optical Sensing V
Saturday, Dec. 2, 2023  16:00-17:00
Presider: Prof. Jung-Sheng Chiang (I-Shou University, Taiwan) Prof. Yao-Ting Wang (National Sun Yat-sen University, Taiwan)
Room: 92371 (3F)
16:00 - 16:15
Manuscript ID.  0492
Paper No.  2023-SAT-S0905-O001
Jin-Yen Lin Surface-Enhanced Infrared Absorption Spectroscopy with Photonic Crystal Guided Resonances
Jin-Yen Lin, Chi Ting Weng, Tzu-Hsun Huang, Wei-Chang Huang, Jia-Wun Liaw, Tsung-Bo Chen, Chun-Yu Yang, Han-Siang Jhuang, Yu-Hua Lin, Jui-Nung Liu, National Cheng Kung University (Taiwan)

The local-field enhancement of the plasmonic resonances has been shown to amplify the typically weak vibrational signals from few molecules. However, until recently high-Q dielectric counterparts were employed as an alternative approach. Here, we further explore this direction by numerically studying surface-enhanced infrared spectroscopy with photonic crystal guided resonance (PCGR) microcavities. We show that coupling to a PCGR can lead to EIA-like enlarged infrared absorption of a deep-subwavelength-thick molecular layer by more than an order of magnitude.

  Preview abstract
16:15 - 16:30
Manuscript ID.  0677
Paper No.  2023-SAT-S0905-O002
An-Sheng Kuo Highly Sensitive Diaphragm-based Fabry-Pérot Interferometer Gas Pressure Sensor by Using Vertically-Polished SMF and Vernier Effect
An-Sheng Kuo, Chin-Ping Yu, National Sun Yat-sen University (Taiwan)

We propose a Fabry-Pérot interferometer (FPI) fiber pressure sensor formed by fiber splicing and vertical polishing technology. As the thickness of the single-mode fiber (SMF) is less than 1 μm, our sensor shows good sensing property to the environmental gas pressure. To improve the sensing sensitivity, we employ the Vernier effect induced by two parallel FPIs with similar cavity lengths. The maximum pressure sensitivity can be as high as 38.5 pm/psi with the magnification factor is about 12. Besides, the measured temperature sensitivity is 16.7 pm/℃.

  Preview abstract
16:30 - 16:45
Manuscript ID.  0207
Paper No.  2023-SAT-S0905-O003
Yu-Cheng Lin Design of Loosy Mode Resonant Sensors Using Silicon Photonics Substrates
Yu-Cheng Lin, Zi-Yi Chu, Yu-Wei Hsu, Chien-Chung Liu, Chung-Yu Lin, Ming Chung University (Taiwan)

This paper presents a LMR (Lossy Mode Resonance) sensor based on a SOI (silicon-on-insulator) substrate, which finds applications in biomedical, chemical, and industrial sensing. The design utilizes the principle of multilayer thin-film reflection, where a silicon waveguide is grown on the SOI substrate and coated with an ITO (Indium Tin Oxide) thin film to form the LMR sensor. By optimizing the thickness of the components, the LMR sensor achieves a resonant wavelength of 0.857 µm and a sensitivity of 0.75 µm/RIU.

  Preview abstract
16:45 - 17:00
Manuscript ID.  0392
Paper No.  2023-SAT-S0905-O004
Martin Kyselak Power Supply of Multichannel Polarization Fiber-optic Temperature Sensors with Using Wavelength Division Multiplexing
Martin Kyselak, Jiri Vavra, University of Defense (Czech Republic); David Grenar, Brno University of Technology (Czech Republic); Karel Slavicek, Masaryk University (Czech Republic)

This article demonstrates the possibility of using wavelength-division multiplexing and polarization-division multiplexing to power-supply temperature sensors. The advantages of fiber-optic polarization sensors are their light weight, inertness, and the absence of electricity, which make them suitable for use in environments with a high possibility of an explosion. Polarization multiplexing increases the capacity of existing single-mode routes and allows the simultaneous power supply of the sensor and data transmission on one wavelength. The sensor’s sensitivity was tested by applying a container at different temperatures and by pendulum swinging. The results were evaluated by an optical power meter and a polarimeter.

  Preview abstract

S9. Optical Sensing

Optical Sensing VI
Sunday, Dec. 3, 2023  09:00-11:00
Presider: Prof. Hsin-Chieh Yu (National Yang Ming Chiao Tung University, Taiwan) Prof. Sheng-Po Chang (National Kaohsiung University of Science and Technology, Taiwan)
Room: 92371 (3F)
09:00 - 09:15
Manuscript ID.  0566
Paper No.  2023-SUN-S0906-O001
M Rivaldi Ali Septian The Optimization of Dual Electron Blocking Layer of Organic Photodetector using ZnPc:C60 as Active Layer
M Rivaldi Ali Septian, Ming Chi University of Technology (Taiwan); Richie Estrada, National Taiwan University of Science and Technology (Taiwan), Ming Chi University of Technology (Taiwan); Shun-Wei Liu, Ming Chi University of Technology (Taiwan)

Organic photodetector (OPD) using ZnPc:C60 as an active layer is potential absorb the red visible region. However, previous research using ZnPc:C60 as an active layer shows low detectivity. In this study, we optimize the OPD with dual electron blocking layer (EBL) using ZnPc:C60 as an active layer to enhance the detectivity.

  Preview abstract
09:15 - 09:30
Manuscript ID.  0066
Paper No.  2023-SUN-S0906-O002
Jui-Chi Chang Deformable Mirror and Deep Learning based Optical Dispersion Manipulation with Spatial Spectral Interferometry
Jui-Chi Chang, Xin-Li Lee, Chia-Yuan Chang, National Cheng Kung University (Taiwan)

Broadband ultrashort pulse laser characterization and compensation is required to develop the nonlinear optical application. In this paper we have integrated the optical dispersion characterization and optimization based on 4-f linear deformable mirror (LDM) pulse shaper and spatial spectral interferometry (SSI). The dispersion optimization with system identification (ID) algorithm based on Legendre polynomial could achueve up to 7 order Legendre mode, which provide a high-order dispersion modulation ability. We also show the dispersion identification with ResNet neural network model. The predict result with control voltage of LDM also shows a great agreement with ID result.

  Preview abstract
09:30 - 09:45
Manuscript ID.  0506
Paper No.  2023-SUN-S0906-O003
Anna Milatul Ummah Revealing a Strong Magneto-Optical Interaction in Wide Bandgap Layered MnPS3 near the Néel temperature
Anna Milatul Ummah, Yu- Hung Peng, Ching-Hwa Ho, National Taiwan University of Science and Technology (Taiwan)

This work reveals Néel ordering transformation in MnPS3. In antiferromagnetic (AFM) state, the ordered spin in 3d orbital of Mn2+ cation influences the intrinsic lattice and vibrational properties of MnPS3. The band-edge excitons of MnPS3 were detected via micro-thermoreflectance (μTR) measurements. With T

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09:45 - 10:00
Manuscript ID.  0586
Paper No.  2023-SUN-S0906-O004
Chia-Ming Mai Non-destructive Electrical Property Estimation of Indium-Tin-Oxide Thin Film with Terahertz Spectroscopy
Chia-Ming Mai, Institute of Electronic Engineering (Taiwan); Karthickraj Muthuramalingam, Chen-Peng Hsu, Electronic and Optoelectronic System Research Laboratories (Taiwan); Shang-Hua Yang, Institute of Electronic Engineering (Taiwan)

In this work, we investigated the electrical properties of indium-tin-oxide (ITO) thin film with transmissive terahertz (THz) time-domain spectroscopy. The ITO thin film is prepared through e-gun evaporation technique on 0.5mm thick glass, whose thickness is 100nm. Through investigation by ultrafast broadband THz pulses, the complex dielectric dispersion relation can be determined. Electrical property such as sheet resistivity is estimated though fitting the dielectric constant to the Drude model, predicted as 29.9 Ω/sq. Results were in good accordance with that obtained from mature yet destructive methods.

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10:00 - 10:15
Manuscript ID.  0872
Paper No.  2023-SUN-S0906-O005
Yi-Jui Yeh Microplasma-engineered Paper-Based Plasmonic Nanoparticles Toward Ultrasensitive SARS-CoV-2 nucleocapsid protein and spike protein variants
Yi-Jui Yeh, Kuo-Lun Tung, National Taiwan University (Taiwan); Wei-Hung Chiang, National Taiwan University of Science and Technology (Taiwan)

Here we reported the three-dimensional (3D) porous AuAgMEN with plasmonic-active nanostructures provide a high sensitivity to virus detection via the remarkable SERS signal collection. Moreover, the variant-specific antibody-functionalization on the SERS-active AuAgMEN enabled the high selectivity of the SARS-CoV-2 S variants, including wild-type, Alpha, Delta, and Omicron, under the simulated human saliva conditions. The exceptional ultrahigh sensitivity of our SERS biosensor was demonstrated via SARS-CoV-2 S and N proteins , respectively. Our work demonstrates a versatile SERS-based detection platform can be applied for the ultrasensitive detection of virus variants, infectious diseases, and cancer biomarkers.

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10:15 - 10:30
Manuscript ID.  0985
Paper No.  2023-SUN-S0906-O006
Debichhanda De Detecting Neurotransmitters such as Dopamine, Gamma Aminobutyric Acid and Acetylcholine Chloride at low concentration using metal-based Novel SERS Substrate
Debichhanda De, Sajal Biring, Ming Chi University of Technology (Taiwan)

Surface-enhanced Raman spectroscopy (SERS) is an indispensable sensing technology in chemical as well as health sectors for its unparalleled capability of detecting Raman-active molecules accurately. Here, we have investigated on the detection of several neurotransmitters such as dopamine, gamma aminobutyric acid and acetylcholine chloride at the concentration of 10-4 M using a metal-based novel SERS substrate following a simple fabrication method. The results revealed that the above-mentioned analyte molecules can be detected unequivocally using the proposed SERS substrate. This study paves a way to detect Raman-active molecules using a cost-effective, unsophisticated SERS substrate.

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10:30 - 10:45
Manuscript ID.  0416
Paper No.  2023-SUN-S0906-O007
Chia-Ling Chiang Feasibility Study of Surface Plasmon Resonance Enhanced Raman System - Detection of Heparin- Platelet Factor IV Complexes as an Example
Chia-Ling Chiang, National Taiwan University (Taiwan); Nan-Fu Chiu, National Taiwan Normal University (Taiwan); Chii-Wann Lin, National Taiwan University (Taiwan)

This research aims to develop a detection system integrating surface plasmon resonance and Raman spectroscopy. As an example, the feasibility of enhancement of the Raman signal by the perturbation of surface plasmon polaritons is demonstrated by heparin-platelet factor 4 complex. Our results showed that lower concentrations of analysis could be measured and confirmed that the Raman scattering signal would be enhanced at the resonance angle, which is verifying the feasibility of the system. Besides, we also found when the angle of incidence is less than the critical angle, the measured spectrum can be regarded as a general spectrum measurement result.

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10:45 - 11:00
Manuscript ID.  0733
Paper No.  2023-SUN-S0906-O008
Muhammad Fajar Faliasthiunus Pradipta Randomized Convolutional Kernel of Mach-Zehnder Interferometer for High Accuracy Curvature Detection
Muhammad Fajar Faliasthiunus Pradipta, Brian Pamukti, Shien-Kuei Liaw, National Taiwan University of Science and Technology (Taiwan); Fu-Liang Yang, Academia Sinica (Taiwan); Hsiou-Hsin Tsai, Taipei Medical University (Taiwan)

Landslide monitoring necessitates timely and precise detection of curvature. Drawbacks like low sensitivity, high noise, and intricate setups hamper the conventional Mach-Zehnder Interferometer (MZI) method for curvature detection. This study introduces an innovative approach, the Randomized Convolutional Kernel of the Mach-Zehnder Interferometer (RaCK-MZI), tailored for highly accurate curvature detection. Remarkably, our approach attains 100% accuracy in training and validation and 98.75% in testing for curvature sensing. This method stands as a notable advancement in landslide monitoring and disaster management. As part of future research, we aim to deploy our technique on a single on-chip device.

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S9. Optical Sensing

Poster Session III
Sunday, Dec. 3, 2023  09:00-11:00
Room: Building of Electrical Engineering (電機系館) (B1)

Manuscript ID.  0758
Paper No.  2023-SUN-P0903-P001
Chia-Chi Chen Polarization interferometer for measuring the full-field refractive index
Chia-Chi Chen, Chin-Jung Chuang, National Dong Hwa University (Taiwan)

In this paper, a polarization interferometer was proposed to measure the full-field refractive index. This apparatus is designed based on the concept of Twyman-Green interferometer, so it has the advantages of simple structure, easy operation and high accuracy. In the experiment, a BK7 plate glass and a quartz glass have been used to verify the feasibility of this method, and the measurement error can be controlled within 2%.

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Manuscript ID.  0511
Paper No.  2023-SUN-P0903-P002
Chia Hsun Lu An Experimental Investigation of Surface Spectral Reflectance Recovery Using a Camera
Chia Hsun Lu, Yuan Ze University (Taiwan); Yu-Che Wen, National Yang Ming Chiao Tung University (Taiwan); Senfar Wen, Yuan Ze University (Taiwan)

The surface spectral reflectance recovery was experimentally investigated using incandescent lamps and synthetic white lamps, respectively. Two ColorCheckers were used as samples. Sample images were captured with a camera. The results show that the experimental results agree with the stimulation results well. The mean root mean square error of the spectral reflectance recovered using incandescent lamps is lower than that of synthetic white lamps.

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Manuscript ID.  0977
Paper No.  2023-SUN-P0903-P003
Ke-Cheng Huang Simulation and Measurement Analysis of Infrared Absorption of Microplastics
Pei-Chun Tseng, Ke-Cheng Huang, Yi-Chun Chen, National Central University (Taiwan)

This study focuses on the simulation and measurement of infrared absorption of microplastics. The measuring configuration consists of an infrared light source, a collimating lens, the sample in a cuvette, a focusing lens and a detector. The tested samples includes different numbers of microplastic spheres in air and in water. Moreover, an optical simulation software ASAP is used to simulate the optical measurements. When 1000 microplastics are immersed in water, the change in transmitted intensity is measured to be approximately 23%. The simulated value for the same setup is around 26%. The experimental and simulated results are highly consistent.

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Manuscript ID.  0020
Paper No.  2023-SUN-P0903-P004
Yung-Yi Chuang Phosphorescence and Fluorescence Lifetime Detection based on Multi-Frequency Harmonics Excitation
Yung-Yi Chuang, Zhen-De Lin, Yi-Chun Chen, National Yang Ming Chiao Tung University (Taiwan)

We demonstrated a custom-built phosphorescence and fluorescence lifetime system, which featured measuring range from 0.1 ns to 5 μs, and temporal resolving power of <0.1 ns. In order to achieve the selected temporal range of lifetime measurement, we performed multi-frequency harmonics excitation to the luminescence materials. The homodyning system included a FPGA card which provided fundamental frequency to modulate the PMT, and chosen harmonics for LEDs modulation. As high-power multi-die LEDs were used, simultaneous and alternative measurements of phosphorescence and fluorescence lifetimes were made possible. This system might contribute to the study of advanced luminescence device and complex biomedical systems.

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Manuscript ID.  1011
Paper No.  2023-SUN-P0903-P005
Yu-Chuan Chiu Research of High Responsivity Amorphous Indium Tungsten Oxide Phototransistor for Blue Light detection
Yu-Chuan Chiu, Yu-Han Chen, Po-Tsun Liu, National Yang Ming Chiao Tung University (Taiwan)

A single layer of amorphous InWO is chosen as the channel material for a thin film transistor (TFT)-based driver and sensing layer for a blue-light sensor, respectively, with a completely compatible process integrated into in-cell embedded photo sensor architecture. The photo sensor exhibits a high optical responsivity and good signal to noise ratio under the blue light illumination. Afterwards, the detail studies and important issues about the sensing and material characteristics of a-IWO thin film in the TFT sensor are discussed.

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Manuscript ID.  0852
Paper No.  2023-SUN-P0903-P006
Wei-Hsiang Chen Application of Reflective Multi-Frequency Sensor in the Terahertz Range
Wei-Hsiang Chen, Yu-Sheng Chen, National Taiwan Normal University (Taiwan); Chien-Hua Chen, National Ilan University (Taiwan); Chan-Shan Yang, National Taiwan Normal University (Taiwan)

We design a metamaterial for reflective terahertz time-domain spectroscopy. The ability of metamaterials in modulating terahertz waves has attracted people's attention, but conventional micro-nano fabrication encounters the limitation of unit cell size, requiring complex steps and expensive equipment. To overcome these obstacles, we propose a 3D-printed terahertz metamaterial sensor for multi-frequency sensing using a simple double-slit configuration. Using the finite element method, the absorption spectra, electromagnetic field distribution, and blood component sensing capabilities of the metamaterials were evaluated. Our work highlights the potential of the designed metamaterial fabrication process.

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Manuscript ID.  0857
Paper No.  2023-SUN-P0903-P007
Devi Taufiq Nurrohman Plasmonic Multimodal Simulation: A Computational Study of SPR and SERS Biosensor Integration
Nan-Fu Chiu, Devi Taufiq Nurrohman, National Taiwan Normal University (Taiwan)

Recently, research on dual-mode biosensors has been gaining increasing interest to
improve the performance of biosensors. In this paper, a computational study is carried out on
SPR chips modified with AuNPs. AuNPs of different sizes were investigated for their SPR
curves and field enhancement factors. The results of this numerical investigation are expected
to be used as a basis for the development of a dual mode biosensor based on SPR/SERS.

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Manuscript ID.  0425
Paper No.  2023-SUN-P0903-P008
Hien Thuy Quy Tran DNA detection by Al-decorated nitride SERS substrates
Hien Thuy Quy Tran, Chien Fan-Ching, Lai Kun-Yu, National Central University (Taiwan)

Surface-enhanced Raman scattering (SERS) is a technique that cooperates excitation laser spectroscopy along with the characteristic of nanostructured materials, consequently boosting Raman signals. SERS substrate is developed to detect many kinds of different biomolecules. Al-decorated nitride SERS substrate was fabricated for DNA detection, which was expected for practical application. In that, investigating DNA molecules have been reported in various studies. This SERS substrate can detect a 19-mer DNA with the concentration down to 1E-6 M by using 488nm excitation laser wavelength.

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Manuscript ID.  0196
Paper No.  2023-SUN-P0903-P009
Chun-Tse Cheng Design of Directional Coupler Based Wavelength-Division Multiplexing on Silicon Photonics
Chun-Tse Cheng, Yu-Cheng Lin, Wen-chin Shen, Pin-Chun Chou, Wen-ru Wang, Ming Chuan University (Taiwan)

This study utilizes silicon photonics SOI as the structure to design a wavelength demultiplexer, serving as a simplified spectrometer. The demultiplexing principle involves the use of directional couplers, with adjustable parameters to design four-wavelength wavelength demultiplexers. The dimensions of the device are 250.5 μm in length and 3.6 μm in width, achieving an extinction ratio of 26.9 dB.

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Manuscript ID.  1045
Paper No.  2023-SUN-P0903-P010
LIANG ZHANG Optical Pen with wide viewing angle for Optical Identification
LIANG ZHANG, Charlse Kwon, Hoseo University (Korea); Chul Gyu Jhun, BONA INC (Korea)

Optical identification (OID) is a technology that can hide digital data and capture
hidden digital data in general printed materials, which can be hidden in general printed
materials through standard printing procedures and standard inks, and coexist with the original
patterns on the printed materials. Through the optical and image processing technology of the
OID Pen, the data hidden in the print can be retrieved. We propose a new idea for the structure
of the OID Pen tip.

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Manuscript ID.  0104
Paper No.  2023-SUN-P0903-P011
Ming-Fong Li Temperature and Strain Sensing by Using LC-filled Fiber MZI Structure
Ming-Fong Li, Chin-Ping Yu, National Sun Yat-sen University (Taiwan)

We propose a Mach-Zehnder interferometer fiber sensor formed by filling liquid crystals into a hollow-core fiber (HCF). With the help of MMF, the interference of the cord mode and cladding mode of the HCF can be successfully induced to form a MZI. The measured results show that the temperature sensitivity can be as high as to 825.79 pm/℃ with the strain sensitivity is 2.87 pm/με.

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Manuscript ID.  0512
Paper No.  2023-SUN-P0903-P012
Ci-Ping Jhang Flexible Photodetectors on Graphite Substrate with Effective Thermal Management
Ci-Ping Jhang, Peng-Chi Wang, Wei-Chen Tu, National Cheng Kung University (Taiwan)

As the chip has a higher performance and efficiency, devices are made more denser,
making the heat dissipation an important engineering problem. In the study, we realize a
flexible and high-performance photodetector with an effective thermal management through
the use of a graphite substrate. The device can be completely bent with a radius of curvature of
1 cm. After being bent 1000 times, the photodetector still has outstanding photoresponse,
indicating that it has the excellent potential for the applications of flexible systems.

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Manuscript ID.  0989
Paper No.  2023-SUN-P0903-P013
Xiao-Dong Wang Automated Program Developed for Scanning Resonance Frequencies and Absorption Spectra
Xiao-Dong Wang, Che-Chung Chou, Tyson Lin, Feng Chia University (Taiwan)

By employing automated control to perform frequency scanning, time needed for manual measurement of resonance frequency and Q facto of quartz oscillator is reduced. Furthermore, integration of data acquisition and processing systems allows for real-time data acquisition and fitting.

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Manuscript ID.  0615
Paper No.  2023-SUN-P0903-P014
Ching-Yao Chang Wide-Bandgap Ga2O3-based Nanostructures Photodetectors by Hydrothermal Method
Po-Yi Li, National Cheng Kung University (Taiwan); Hao-Ying Lu, National Quemoy University (Taiwan); Sheng-Po Chang, National Kaohsiung University of Science and Technology (Taiwan); Ching-Yao Chang, Jone-Fang Chen, Shoou-Jinn Chang, National Cheng Kung University (Taiwan)

This research focuses on the growth of Ga2O3 nanostructures by hydrothermal method and investigates their properties as photodetectors. Gallium oxide (Ga2O3) is a promising material for optoelectronic applications due to its wide bandgap and high electron mobility. The study involved the synthesis of Ga2O3 nanostructures using the hydrothermal method, followed by structural characterization using techniques such as XRD and SEM. Photodetectors were fabricated using Ga2O3 nanostructures annealed at various temperatures, and their performance in terms of responsivity, response ratio, and switch-on time was systematically examined. This study provides valuable insights into utilizing Ga2O3 nanostructures for high-performance photodetection devices.

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Manuscript ID.  1117
Paper No.  2023-SUN-P0903-P015
Long-Jeng Lee The Study of Sediment core by Development of Longer Scanning Hyperspectral Spectral Imager
Long-Jeng Lee, Taiwan Instrument Research Institute, National Applied Research Laboratories (Taiwan); Chienhsun Chen, Taiwan Ocean Research Institute, National Applied Research Laboratory (Taiwan)

The spectra image data could be used to estimate the distribution of different types of sediment particles in the sediment core, and based on this, the specific benefits of this integrated system in marine sediment cores. The sample of sediment core, the die seagrass was deposition within. The hyperspectral image and reflectance image of sediment core were presented for discussion.

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Manuscript ID.  1103
Paper No.  2023-SUN-P0903-P016
Wei-Hao Jian Self-Powered High Performance Cd3As2/CdZnTe/Si Photodetector Operating in the UV to Mid-Infrared
Wei-Hao Jian, You Wei Kee, Ting-Wei Hsu, Hung-Chi Yao, Hsin-Hsuan Lee, Jyong-Han Wu, Chung Yuan Christian University (Taiwan); Chun-Han Yao, Ruei-San Chen, National Taiwan University of Science and Technology (Taiwan); Zhi-Xiang Wang, Chung Yuan Christian University (Taiwan)

A Cd3As2/CdZnTe/Si heterostructure was grown by MBE to be used as a photodetector, with photocurrent being detected from 375 nm to 4.6 µm wavelength. Under an exposed light of 1064 nm wavelength, the photoresponsivity was measured to be 0.52 A/W, with an on/off current ratio of 1.3 × 106 and detectivity of 5.5 × 1011 Jones. While the on/off photoresponse time under 405 nm wavelength was 3.4/67.3 µs.

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