Session Index

S2. Optical Waveguides and Communications

Optical Waveguides and Communications IV
Saturday, Dec. 2, 2023  13:00-15:00
Presider: Prof. Borwen You (National Changhua University of Education, Taiwan) Prof. Chia-Yi Huang (Tunghai University, Taiwan)
Room: 92171 (1F)
13:00 - 13:30
Manuscript ID.  0635
Paper No.  2023-SAT-S0204-I001
Invited Speaker:
Chengkuo Lee
Advances in Mid IR Optical Waveguides and Applications
Chengkuo Lee, National University of Singapore (Singapore)

Guided-wave nanophotonics that manipulate light-matter interactions at the nanoscale, is an appealing technology for diversified biochemical and physical sensing applications with high sensitivity and small footprints. Recently, the mid-infrared (mid-IR, 2-20 µm wavelength) that encompasses multiple atmospheric windows and abundant molecular absorption fingerprints presents a significant growth opportunity for integrated photonics, with applications ranging from clinical diagnosis to astronomical spectroscopy. Here, we provide an overview of the recent advances in research on mid-IR optical waveguides and their emerging applications.

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13:30 - 13:45
Manuscript ID.  0060
Paper No.  2023-SAT-S0204-O001
Yung-Chun Hsu Periodic Square Donut Waveguides
Yung-Chun Hsu, Guan-Yi Lin, Chii-Chang Chen, National Central University (Taiwan)

This paper investigates the photonic band gap of periodic square donut waveguides. The structure is capable of producing a diffractionless light beam. We study the focus at the output of the donut waveguide. The lens effect with ultra-high numerical aperture of 0.947 is found.

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13:45 - 14:00
Manuscript ID.  0065
Paper No.  2023-SAT-S0204-O002
Po-Hsiang Chiu Shallow-ridge silicon nitride polarization beam splitter based on asymmetrical directional couplers
Po-Hsiang Chiu, Chun-Ta Wang, National Sun Yat-sen University (Taiwan); Wen-Hsien Huang, Hsing-Hsiang Wang, Taiwan Semiconductor Research Institute (Taiwan)

In this work, we demonstrated a shallow-ridge silicon nitride polarization beam splitter based on an asymmetric directional coupler structure. The simulation results show that the extinction ratio of the PBS is greater than 10 dB for transverse-electric polarization in the range from 1450 to 1555 nm and transverse magnetic polarization in the range from 1497 to 1650 nm.

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14:00 - 14:15
Manuscript ID.  0150
Paper No.  2023-SAT-S0204-O003
Yong-Jyun Chen Silicon Nitride-based High Order Ring Resonators for a Box-Like Response
Hsing-Hsiang Wang, Wen-Hsien Huang, Taiwan Semiconductor Research Institute (Taiwan); Chun-Ta Wang, Yong-Jyun Chen, National Sun Yat-Sen University (Taiwan)

In this work, we proposed and simulated a high-order micro-ring resonators based on silicon nitride waveguides. The results show that when the number of coupled rings increases, the spectrum of micro-ring resonators exhibits a more box-like response. The design
can reduce the crosstalk in optical propagation.

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14:15 - 14:30
Manuscript ID.  0668
Paper No.  2023-SAT-S0204-O004
Zong-Ming Chang Broadband polarization beam splitter based on asymmetric waveguide geometry on silicon-on-insulator for O-band telecom wavelengths
Zong-Ming Chang, Yung-Jr Hung, National Sun Yat-sen University (Taiwan)

We propose a polarization beam splitter (PBS) with sinusoidal bends for O-band wavelengths. The PBS is designed on an asymmetric silicon waveguide enabled by localized air trench formation provided by the foundry, and exhibit a polarization extinction ratio exceeding 20 dB with low insertion loss.

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14:30 - 14:45
Manuscript ID.  0203
Paper No.  2023-SAT-S0204-O005
Jing-Xuan Chen Experimental Characterization of a Three-Mode Silicon Photonics Vertical Grating Coupler for Fiber-Chip Mode Division Multiplexing
Yuan-Zhe Lin, Yi-Jang Hsu, Shi-Chieh Hsu, Jing-Xuan Chen, Yinchieh Lai, National Yang Ming Chiao Tung University (Taiwan)

We experimentally demonstrate and characterize a vertical grating coupler capable of multiplexing/de-multiplexing three modes (one fundamental and two first-order modes) between a few-mode fiber and the silicon photonics chip. The best coupling efficiencies are around −5 dB with the cross-talks better than -15dB.

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14:45 - 15:00
Manuscript ID.  0426
Paper No.  2023-SAT-S0204-O006
Po-Chou Hung Low-loss waveguide bend enabled silicon micro-ring modulator
Po-Chou Hung, Ruei-Shen Wang, Chih-Hsien Chen, Yung-Jr Hung, National Sun Yat-sen University (Taiwan)

We employ a low-loss waveguide bend design having gradually-changed width and bending radius to realize a high-speed silicon micro-ring modulator (MRM) for o-band. The resultant silicon MRM enables a tuning efficiency of 35 pm/V, a quality factor of 5020, and an electro-optic bandwidth of 55 GHz.

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