This study reports the use of spectral modulation to solve photocurrent mismatch between sub-cells of triple-junction GaAs solar cell as well as to increase conversion efficiency by using a specific thickness of single antireflection TiO2-layer.
{"title":"Current Mismatch Improving of Triple Junction GaAs Solar Cell Using Antireflective Spectral Modulation","authors":"Xing‐Yu Chen, W. Ho, Jheng-Jie Liu, His-Wen Hsu, Wei-chih Chiu, Yau–Huei Chen","doi":"10.1109/OECC48412.2020.9273618","DOIUrl":"https://doi.org/10.1109/OECC48412.2020.9273618","url":null,"abstract":"This study reports the use of spectral modulation to solve photocurrent mismatch between sub-cells of triple-junction GaAs solar cell as well as to increase conversion efficiency by using a specific thickness of single antireflection TiO2-layer.","PeriodicalId":433309,"journal":{"name":"2020 Opto-Electronics and Communications Conference (OECC)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127401981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-04DOI: 10.1109/OECC48412.2020.9273698
M. Nada, Shoko Tatsumi, T. Shindo, Y. Nakanishi, H. Matsuzaki, K. Sano
This talk will review our recent work on a high-speed avalanche photodiode (APD). Recent results show 100-Gbit/s PAM4 40-km transmission with receiver sensitivity exceeding -14 dBm when the APD is combined with in-house SOA-integrated EML.
{"title":"High-speed Photodetector Technologies for 100-Gbit/s PAM4 Systems and Beyond : (Invited paper)","authors":"M. Nada, Shoko Tatsumi, T. Shindo, Y. Nakanishi, H. Matsuzaki, K. Sano","doi":"10.1109/OECC48412.2020.9273698","DOIUrl":"https://doi.org/10.1109/OECC48412.2020.9273698","url":null,"abstract":"This talk will review our recent work on a high-speed avalanche photodiode (APD). Recent results show 100-Gbit/s PAM4 40-km transmission with receiver sensitivity exceeding -14 dBm when the APD is combined with in-house SOA-integrated EML.","PeriodicalId":433309,"journal":{"name":"2020 Opto-Electronics and Communications Conference (OECC)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128200437","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-04DOI: 10.1109/OECC48412.2020.9273731
Siti Sulikhah, H. Tsao, San-Liang Lee
Dual contact coupled cavity DFB-LD is proposed and optimized for 56-Gbaud PAM-4 signals. 3-dB bandwidth of 53.6-GHz are demonstrated by 100-μm long region 1 and 140-μm long region 2, obtained clear eye openings with ER>8-dB.
{"title":"Design and Performance Analysis of Dual Contact Coupled Cavity DFB-LD with Phase-Shifted/Phase-Shifted Gratings","authors":"Siti Sulikhah, H. Tsao, San-Liang Lee","doi":"10.1109/OECC48412.2020.9273731","DOIUrl":"https://doi.org/10.1109/OECC48412.2020.9273731","url":null,"abstract":"Dual contact coupled cavity DFB-LD is proposed and optimized for 56-Gbaud PAM-4 signals. 3-dB bandwidth of 53.6-GHz are demonstrated by 100-μm long region 1 and 140-μm long region 2, obtained clear eye openings with ER>8-dB.","PeriodicalId":433309,"journal":{"name":"2020 Opto-Electronics and Communications Conference (OECC)","volume":"16 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134085958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-04DOI: 10.1109/OECC48412.2020.9273667
Jhao-Ren Chen, Wei-Yao You, C. Yeh, Jing-Heng Chen, C. Chow
We present and design an erbium-doped fiber (EDF) ring laser with Rayleigh backscattering (RB) characteristic to accomplish stable tunability and single-longitudinal-mode (SMF) oscillation. Besides, the related laser output features are also discussed.
{"title":"Simple Erbium Fiber Laser Architecture for Stable Tunability and Single-Mode Oscillation","authors":"Jhao-Ren Chen, Wei-Yao You, C. Yeh, Jing-Heng Chen, C. Chow","doi":"10.1109/OECC48412.2020.9273667","DOIUrl":"https://doi.org/10.1109/OECC48412.2020.9273667","url":null,"abstract":"We present and design an erbium-doped fiber (EDF) ring laser with Rayleigh backscattering (RB) characteristic to accomplish stable tunability and single-longitudinal-mode (SMF) oscillation. Besides, the related laser output features are also discussed.","PeriodicalId":433309,"journal":{"name":"2020 Opto-Electronics and Communications Conference (OECC)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134170046","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-04DOI: 10.1109/OECC48412.2020.9273600
Govind Sharan Yadav, Jhih-Heng Yan, K. Feng
We demonstrate a radial basis function network equalizer for 112-Gb/s IM-DD PAM4 inter-datacenter transmissions with gain-clamped SOA pre-amplifiers. The results outperform VNLE and FFE in receiving sensitivity, dynamic range and BER with >4dB power margin.
{"title":"Radial Basis Function Network Equalizer for 112 Gb/s PAM4 IM-DD Inter-Data Centers Transmission with Gain-Clamped Semiconductor Optical Amplifier","authors":"Govind Sharan Yadav, Jhih-Heng Yan, K. Feng","doi":"10.1109/OECC48412.2020.9273600","DOIUrl":"https://doi.org/10.1109/OECC48412.2020.9273600","url":null,"abstract":"We demonstrate a radial basis function network equalizer for 112-Gb/s IM-DD PAM4 inter-datacenter transmissions with gain-clamped SOA pre-amplifiers. The results outperform VNLE and FFE in receiving sensitivity, dynamic range and BER with >4dB power margin.","PeriodicalId":433309,"journal":{"name":"2020 Opto-Electronics and Communications Conference (OECC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134182763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-04DOI: 10.1109/OECC48412.2020.9273693
The Anh Nguyen, Ming-Chang M. Lee
We present an asymmetric dual-level grating coupler fabricated on an ultra-thin Si/Si3N4 composite photonics platform to achieve a high coupling efficiency for light coupled from a single-mode fiber to the waveguide and vice versa.
{"title":"Asymmetric dual-level grating coupler for coupling light to ultra-thin Si/Si3N4 composite photonics","authors":"The Anh Nguyen, Ming-Chang M. Lee","doi":"10.1109/OECC48412.2020.9273693","DOIUrl":"https://doi.org/10.1109/OECC48412.2020.9273693","url":null,"abstract":"We present an asymmetric dual-level grating coupler fabricated on an ultra-thin Si/Si3N4 composite photonics platform to achieve a high coupling efficiency for light coupled from a single-mode fiber to the waveguide and vice versa.","PeriodicalId":433309,"journal":{"name":"2020 Opto-Electronics and Communications Conference (OECC)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134324296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-04DOI: 10.1109/OECC48412.2020.9273594
Kai-Ning Ku, Po-Chih Chang, Chung-Chih Wang, Chen-Yu Lin, Chih-Hsiang Hsu, T. Chen, Chien-Ying Huang, Chi-Sen Lee, Yu-Fang Chen, K. Chou, Shang-Chun Chen, Ming-Chang M. Lee, Chien-Chung Lin, M. Chu, Chih-I Wu
This research presents the design and characterization of the traveling wave Mach Zehnder modulator loaded L-shaped PN junction phase shifter at 72.8 Gbps data-rate. We propose a new structure of phase shifter with low series resistance meanwhile maintaining the FOM with low VπL (0.9 V-cm) and optical absorption.
{"title":"High Speed Mach Zehnder Modulator with Low Series Resistance Phase Shifter Loaded in Traveling Wave Electrode","authors":"Kai-Ning Ku, Po-Chih Chang, Chung-Chih Wang, Chen-Yu Lin, Chih-Hsiang Hsu, T. Chen, Chien-Ying Huang, Chi-Sen Lee, Yu-Fang Chen, K. Chou, Shang-Chun Chen, Ming-Chang M. Lee, Chien-Chung Lin, M. Chu, Chih-I Wu","doi":"10.1109/OECC48412.2020.9273594","DOIUrl":"https://doi.org/10.1109/OECC48412.2020.9273594","url":null,"abstract":"This research presents the design and characterization of the traveling wave Mach Zehnder modulator loaded L-shaped PN junction phase shifter at 72.8 Gbps data-rate. We propose a new structure of phase shifter with low series resistance meanwhile maintaining the FOM with low VπL (0.9 V-cm) and optical absorption.","PeriodicalId":433309,"journal":{"name":"2020 Opto-Electronics and Communications Conference (OECC)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133062097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-04DOI: 10.1109/OECC48412.2020.9273586
Xin Qin, Pengfei Wang, Chuanchuan Yang, Fan Zhang, Xinyue Wang, Ziyu Wang
RNN-based joint equalization and decoding methods are proposed for data center with TCM signals. Numerical results show compared with traditional DSP algorithms, our method improves power sensitivity by 2.2dB@BER=3.8×10-3 with 96% reduced complexity.
{"title":"A Low-Complexity Recurrent Neural Network Based Joint Equalization and Decoding Method for Trellis Coded Modulation Link in Data Center","authors":"Xin Qin, Pengfei Wang, Chuanchuan Yang, Fan Zhang, Xinyue Wang, Ziyu Wang","doi":"10.1109/OECC48412.2020.9273586","DOIUrl":"https://doi.org/10.1109/OECC48412.2020.9273586","url":null,"abstract":"RNN-based joint equalization and decoding methods are proposed for data center with TCM signals. Numerical results show compared with traditional DSP algorithms, our method improves power sensitivity by 2.2dB@BER=3.8×10-3 with 96% reduced complexity.","PeriodicalId":433309,"journal":{"name":"2020 Opto-Electronics and Communications Conference (OECC)","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128997913","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-04DOI: 10.1109/OECC48412.2020.9273522
Yuri Niiya, T. Kuboki, K. Kato
In order to realize a high-speed wavelength switching of the TDA-DFB laser at a wide switching width, we developed an accurate control model accounting for the laser nonlinearity. We applied our nonlinear model to 400-GHz-wide and 600-GHz-wide switching and achieved a switching time within 50 ns.
{"title":"Wide-Range Wavelength Switching at TDA-DFB Laser by Nonlinear Model","authors":"Yuri Niiya, T. Kuboki, K. Kato","doi":"10.1109/OECC48412.2020.9273522","DOIUrl":"https://doi.org/10.1109/OECC48412.2020.9273522","url":null,"abstract":"In order to realize a high-speed wavelength switching of the TDA-DFB laser at a wide switching width, we developed an accurate control model accounting for the laser nonlinearity. We applied our nonlinear model to 400-GHz-wide and 600-GHz-wide switching and achieved a switching time within 50 ns.","PeriodicalId":433309,"journal":{"name":"2020 Opto-Electronics and Communications Conference (OECC)","volume":"27 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114001806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2020-10-04DOI: 10.1109/OECC48412.2020.9273593
Ryoto Nakagawa, Moriya Nakamura
We investigated the use of digital to analog converters (DACs) instead of the electrical analog Hilbert transformers in optical twin-SSB systems. We clarified the required resolution and sampling frequency of the DACs.
{"title":"Performance Evaluation of Twin-SSB Modulation Using Digital-to-Analogue Converters","authors":"Ryoto Nakagawa, Moriya Nakamura","doi":"10.1109/OECC48412.2020.9273593","DOIUrl":"https://doi.org/10.1109/OECC48412.2020.9273593","url":null,"abstract":"We investigated the use of digital to analog converters (DACs) instead of the electrical analog Hilbert transformers in optical twin-SSB systems. We clarified the required resolution and sampling frequency of the DACs.","PeriodicalId":433309,"journal":{"name":"2020 Opto-Electronics and Communications Conference (OECC)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123076434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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