Session Index

S2. Optical Waveguides and Communications

Optical Waveguides and Communications IV
Saturday, Dec. 3, 2022  13:00-15:15
Presider: Chen-Bin Huang、You-Chia Chang
Room: B1 A002
13:00 - 13:30
Manuscript ID.  0889
Paper No.  2022-SAT-S0204-I001
Invited Speaker:
Peng-Chun Peng
Fiber Wireless Convergence for 6G Mobile Communications
Peng-Chun Peng, National Taipei University of Technology (Taiwan)

We review emerging technologies including radio-over-fiber and photonic-assisted wireless communication systems, new radio access network architecture design and performance optimization, and enhanced radio access technologies for 6G mobile communications.

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13:30 - 13:45
Manuscript ID.  0304
Paper No.  2022-SAT-S0204-O001
Ying-Hsueh Chen Widely steerable 16x64 silicon optical phased array with 1x16 optical switches
Wei-Chung Peng, Ying-Hsueh Chen, Wei-Xun Chen, Tsung-Han Lee, San-Liang Lee, National Taiwan University of Science and Technology (Taiwan); Po-Yi Wu, Vivian Kung, Ting-Ta Hu, FOCI Fiber Optic Communications (Taiwan)

A silicon photonics integrated 16x64 optical phased array (OPA) enables wide-angle beam steering by using optical switches to switch 16 1x64 OPAs, each covers a different steering angle. The measurement demonstrated that the voltage required to switch the different sub-OPAs is < 3V, and the measured far-field patterns confirm the successful switching to the OPAs and cover different beam steering angles.

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13:45 - 14:00
Manuscript ID.  0441
Paper No.  2022-SAT-S0204-O002
Yu-Hao Chen Fabrication and Characterization of Cr4+:YAG Thin Film Employing Sol-Gel Method
Ping-Hsuan Yang, Yu-Hao Chen, Chun-Nien Liu, Wood-Hi Cheng, National Chung Hsing University (Taiwan)

In this study, chromium doped yttrium garnet(Cr4+:YAG) thin film was synthesized by sol-gel method. The XRD pattern of the Cr4+:YAG thin film exhibited the YAG phase, and then the fluorescence showed the spectrum of 1200-1600nm as same as a commercial Cr4+:YAG crystal rod. This Cr4+:YAG thin film would be used in silicon photonic chip for the next-generation optical amplifier.

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14:00 - 14:15
Manuscript ID.  0458
Paper No.  2022-SAT-S0204-O003
Jia-Ping Su 74 dB Power-Link Budget of 10-Gbps Low Earth Orbit Satellites Communication with Volterra and Machine Learning Compensation
Jia-Ping Su, Yi-Jun Cai, Shao-Hung Yu, Zheng-Wei Huang, Yu-Pin Lan, National Yang-Ming Chiao Tung University (Taiwan); Chen-Joe Fang, National Space Organization (Taiwan); Chun-Ting Lin, National Yang-Ming Chiao Tung University (Taiwan)

We propose power-link budgets of 10-Gbps 1000-km satellite laser communication. The Directly
Modulated Laser (DML) nonlinearity comparison of orthogonal frequency-division multiplexing (OFDM) and
single carrier (SC) signals is invesigated. With Volterra and machine-learning nonlinear compensation, the
power-link budget achieve up to 74 dB.

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14:15 - 14:30
Manuscript ID.  0474
Paper No.  2022-SAT-S0204-O004
Wei-Che Chang >100 Gbps 3×3 MIMO V-Band RoF System with NN-based Equalization for up to 100m Wireless Transmission
Wei-Che Chang, National Yang Ming Chiao Tung University (Taiwan); Chia-Chien Wei, National Sun Yat-sen University (Taiwan); Yu-Jen Huang, Zhen-Xiong Xie, Ping-Yao Huang, Pin-Hsuan Ting, Chun-Ting Lin, National Yang Ming Chiao Tung University (Taiwan)

This study employs a single neural-network-based nonlinear equalizer in a 3×3 MIMO
V-band RoF system for the first time. Experiment results demonstrate >30% improvement in data
rate and >100-Gbps wireless transmission over 100 m.

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14:30 - 14:45
Manuscript ID.  0661
Paper No.  2022-SAT-S0204-O005
Guei-Ting Hsu An experimental investigation of the cryogenic characteristics of 850 nm VCSELs
Guei-Ting Hsu, Yun-Cheng Yang, Hao-Tien Cheng, Te-Hua Liu, Hsiang-Chun Yen, Chao-Hsin Wu, National Taiwan Univ. (Taiwan)

In this study, we investigate the cryogenic characteristics of 850 nm datacom vertical-cavity surface-emitting lasers (VCSELs). The light-current-voltage (L-I-V) and the spectral characteristics of the 850 nm VCSELs at various temperatures are studied at 80, 170 and 298 K. Higher material gains and lower optical losses boost the optical output powers and extend the operating currents at lower temperatures. VCSELs also suffer from a significant increase in lasing threshold due to misalignment of the Fabry–Perot (FP) dips.

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14:45 - 15:00
Manuscript ID.  0110
Paper No.  2022-SAT-S0204-O006
Hung-Ching Chung Low-Loss Silicon Bent Waveguides using Various Window Functions
Hung-Ching Chung, Zai-Shuo Yang, Shuo-Yen Tseng, National Cheng Kung University (Taiwan)

For high-performance photonic integrated circuits, reducing bending loss of bent waveguides is a major issue. We design and optimize the performance of silicon bent waveguides by using different window functions, which vary not only bent waveguide radius but also waveguide width. Comparing various bent waveguides using different window functions to the conventional bent waveguide with constant radius and width, the bending loss can be reduced from 0.485 dB to 0.22 dB by optimizing the performance of bent waveguide using 2x trapezoid window function.

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15:00 - 15:15
Manuscript ID.  0480
Paper No.  2022-SAT-S0204-O007
Kimio Oguchi Simple Optical Add-Drop Multiplexing Ring Networks
Kimio Oguchi, National Taiwan University of Science and Technology (Taiwan)

This article first explains general requirements of optical add-drop multiplexing network and describes some technical issues to realize their simple networks. Then, some standardization activities on the optical requirements in a small area are listed and discussed. With surveyed results, in the small area, multi-mode fiber with 800, or 1300 nm band can be used for actual realization with cost effectiveness. Especially, parameters of short 100 Gb/s coarse WDM usage around 900 nm might be powerful candidates if commercially available devices will be used.

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