Session Index

S2. Optical Waveguides and Communications

Optical Waveguides and Communications III
Saturday, Dec. 2, 2023  10:45-12:00
Presider: Prof. Shih-Hsiang Hsu (National Taiwan University of Science and Technology, Taiwan)
Room: 92171 (1F)
10:45 - 11:00
Manuscript ID.  0185
Paper No.  2023-SAT-S0203-O001
Ming-Chieh Tsai PAM4 Rolling Shutter Based Optical Camera Communication In Foggy Environment Using Machine Learning
Ming-Chieh Tsai, Shang-Yen Tsai, Jia-Fu Li, Jian-Wen Chen, Yun-Han Chang, Chi-Wai Chow, National Yang Ming Chiao Tung University (Taiwan); Chien-Hung Yeh, Feng Chia University (Taiwan)

We demonstrate and characterize a 4-level pulse-amplitude-modulation (PAM4) optical-camera-communication (OCC) system under foggy environment. The proposed Long-Short-Term-Memory-Neural-Network (LSTM-NN) can mitigate the high pass loss due to scattering in the foggy environment.

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11:00 - 11:15
Manuscript ID.  0144
Paper No.  2023-SAT-S0203-O002
Ayuka Nakamura Orbital Angular Momentum Mode Recognition Based on Sparse Coding for Beams Affected by Underwater Turbulence
Ayuka Nakamura, Hiroki Kishikawa, Tokushima University (Japan); Shien-Kuei Liaw, National Taiwan University of Science and Technology (Taiwan)

We evaluate the performance of the mode recognition based on sparse coding for OAM beams affected by turbulence in underwater optical wireless communication. Since the sparse coding is a linear model machine learning process, the mode recognition results outperform the usual optics-based mode recognition using an inverse phase multiplication and a spatial filter.

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11:15 - 11:30
Manuscript ID.  0319
Paper No.  2023-SAT-S0203-O003
Yong-Xuan Lee Blue Semipolar GaN Micro-LED for Short-Reach LiFi
Pin-Wei Ho, National Taiwan University (Taiwan); Chih-Hsien Cheng, National Institute of Information and Communications Technology (Japan); Yu-Sheng Liao, Yu-Chieh Chi, SANway Optoelectronics tech. Corp. (Taiwan); Po-Lun Chen, Yong-Xuan Lee, Guan-Yi Wu, National Taiwan University (Taiwan); Hao-Chung Kuo, National Yang Ming Chiao Tung University (Taiwan), Hon Hai Research Institute (Taiwan); Gong-Ru Lin, National Taiwan University (Taiwan), Tektronix Inc. and National Taiwan University (Taiwan)

The optimized transmission throughput of the blue semipolar u-LED is demonstrated to perform 0.75m desktop point-to-point LiFi at 2.5-Gbps NRZ-OOK and 1.6-GBaud 16-QAM-OFDM with performing the signal-to-noise-ratio pre-emphasis algorithm.

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11:30 - 11:45
Manuscript ID.  0187
Paper No.  2023-SAT-S0203-O004
Jia-Fu Li Rolling Shutter Based Optical Camera Communication Using Light-Diffusing Fiber for Spatial Multiplexing
Jia-Fu Li, Shang-Yen Tsai, Shang-Yen Tsai, Jian-Wen Chen, Yun-Han Chang, Chi-Wai Chow, National Yang Ming Chiao Tung University (Taiwan); Chien-Hung Yeh, Feng Chia University (Taiwan)

We demonstrate an optical-camera-communication (OCC) system using light-diffusing-fibers (LDFs) for spatial-multiplexing. When the two LDFs are 0.5-cm side-by-side, 1.5-kbit/s-per-LDF is achieved. An aggregated data rate of 48-kbit/s could be estimated using LDF spatial-multiplexing.

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11:45 - 12:00
Manuscript ID.  0083
Paper No.  2023-SAT-S0203-O005
Yuki Hirasawa Compensation Performance for Atmospheric Turbulence-Induced Phase Fluctuation on Multiplexed OAM Beams
Yuki Hirasawa, Hiroki Kishikawa, Junichi Fujikata, Tokushima University (Japan)

Intensity and phase distributions of multiplexed OAM beams propagating in free space fluctuate due to atmospheric turbulence. To discriminate the modes of the multiplexed OAM beam at the receiver, it is necessary to reduce the effect of turbulence-induced phase variation. We evaluate the parameters of a reference OAM beam having a single azimuthal mode that compensates for such turbulence effects on the 30-mode multiplexed OAM beams, based on the optical compensation method using a reference beam and a wavefront sensor.

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