Pub Date : 2024-12-11DOI: 10.1109/JLT.2024.3511328
{"title":"Journal of Lightwave Technology Information for Authors","authors":"","doi":"10.1109/JLT.2024.3511328","DOIUrl":"https://doi.org/10.1109/JLT.2024.3511328","url":null,"abstract":"","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"42 24","pages":"C3-C3"},"PeriodicalIF":4.1,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10794500","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-12-11DOI: 10.1109/JLT.2024.3511224
{"title":"Journal of Lightwave Technology Information for Authors","authors":"","doi":"10.1109/JLT.2024.3511224","DOIUrl":"https://doi.org/10.1109/JLT.2024.3511224","url":null,"abstract":"","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"42 21","pages":"C3-C3"},"PeriodicalIF":4.1,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10794526","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810460","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-29DOI: 10.1109/JLT.2024.3509402
Charles St-Arnault;Santiago Bernal;Ramón Gutiérrez-Castrejn;Essam Berikaa;Weijia Li;Zixian Wei;Yixiang Hu;Md Samiul Alam;Janina Rautert;Sergey V. Poltavtsev;Alexey E. Gubenko;Vasilii V. Belykh;Vladimir S. Mikhrin;Alexey R. Kovsh;David V. Plant
Due to the exponential growth of internet traffic, the demand for increased capacity for inter and intra-datacenter interconnects is pushing the adoption of coherent and WDM transceivers in the O-band. Semiconductor optical amplifiers are a popular choice of amplifying technology for datacenter applications, but the choice of active region technology (QD, QW and Bulk) remains unclear for signal amplification. This article presents a qualitative and quantitative comparison of SOA and fiber amplifier characteristics and performance for IM/DD and coherent transmission systems operating at the Tbps capacities required for the next generation of optical transceivers. First, we discuss the advantages of QD for SOAs. Next, we quantify key SOA performance metrics for QD, QW and bulk SOA technologies. The QD SOA demonstrates an input saturation power of +4.1 dBm, a small signal gain of 18.2 dB, a noise figure of 5.6 dB and an $alpha$ -factor of 0.86-1.2. Finally, a high speed transmission performance analysis is presented for single-wavelength and WDM configurations for both IM/DD and coherent transmission. The QD SOA outperformed all other amplifiers for both IM/DD and coherent. Notably, the QD SOA enabled 432Gbps using 180 GBaud PAM8 under the 25% overhead SD-FEC threshold and was the only amplifier to achieve 1.6 Tbps for coherent transmission under the same FEC threshold at 10km. These results underscore the exceptional advantage of QD for SOAs highlighting its potential for future high-capacity optical networks operating in both IM/DD and coherent across single or multiple wavelengths.
{"title":"Performance and Characterization Comparison of QD SOA, QW SOA, Bulk SOA and PDFA for Multi-Tbps O-Band WDM Links","authors":"Charles St-Arnault;Santiago Bernal;Ramón Gutiérrez-Castrejn;Essam Berikaa;Weijia Li;Zixian Wei;Yixiang Hu;Md Samiul Alam;Janina Rautert;Sergey V. Poltavtsev;Alexey E. Gubenko;Vasilii V. Belykh;Vladimir S. Mikhrin;Alexey R. Kovsh;David V. Plant","doi":"10.1109/JLT.2024.3509402","DOIUrl":"https://doi.org/10.1109/JLT.2024.3509402","url":null,"abstract":"Due to the exponential growth of internet traffic, the demand for increased capacity for inter and intra-datacenter interconnects is pushing the adoption of coherent and WDM transceivers in the O-band. Semiconductor optical amplifiers are a popular choice of amplifying technology for datacenter applications, but the choice of active region technology (QD, QW and Bulk) remains unclear for signal amplification. This article presents a qualitative and quantitative comparison of SOA and fiber amplifier characteristics and performance for IM/DD and coherent transmission systems operating at the Tbps capacities required for the next generation of optical transceivers. First, we discuss the advantages of QD for SOAs. Next, we quantify key SOA performance metrics for QD, QW and bulk SOA technologies. The QD SOA demonstrates an input saturation power of +4.1 dBm, a small signal gain of 18.2 dB, a noise figure of 5.6 dB and an <inline-formula><tex-math>$alpha$</tex-math></inline-formula> -factor of 0.86-1.2. Finally, a high speed transmission performance analysis is presented for single-wavelength and WDM configurations for both IM/DD and coherent transmission. The QD SOA outperformed all other amplifiers for both IM/DD and coherent. Notably, the QD SOA enabled 432Gbps using 180 GBaud PAM8 under the 25% overhead SD-FEC threshold and was the only amplifier to achieve 1.6 Tbps for coherent transmission under the same FEC threshold at 10km. These results underscore the exceptional advantage of QD for SOAs highlighting its potential for future high-capacity optical networks operating in both IM/DD and coherent across single or multiple wavelengths.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"43 4","pages":"1915-1925"},"PeriodicalIF":4.1,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-28DOI: 10.1109/JLT.2024.3494932
{"title":"A Thank You to All Our Reviewers","authors":"","doi":"10.1109/JLT.2024.3494932","DOIUrl":"https://doi.org/10.1109/JLT.2024.3494932","url":null,"abstract":"","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"42 24","pages":"8975-8976"},"PeriodicalIF":4.1,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10771613","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142736279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-28DOI: 10.1109/JLT.2024.3503279
Gabriella Bosco
As i write this final editorial as Editor-in-Chief (EiC) of the Journal of Lightwave Technology (JLT), I am filled with mixed emotions: pride in our accomplishments, sadness in parting from close teammates, and relief at completing this fulfilling journey. Serving as EiC of JLT over the past six years has been both an honor and a privilege. When I began this role, I had only a vague sense of what to expect, but it has proven to be a rewarding journey of continuous learning.
{"title":"Editorial: EiC Farewell and Introduction of New EiC","authors":"Gabriella Bosco","doi":"10.1109/JLT.2024.3503279","DOIUrl":"https://doi.org/10.1109/JLT.2024.3503279","url":null,"abstract":"As i write this final editorial as Editor-in-Chief (EiC) of the \u0000<sc>Journal of Lightwave Technology</small>\u0000 (JLT), I am filled with mixed emotions: pride in our accomplishments, sadness in parting from close teammates, and relief at completing this fulfilling journey. Serving as EiC of JLT over the past six years has been both an honor and a privilege. When I began this role, I had only a vague sense of what to expect, but it has proven to be a rewarding journey of continuous learning.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"42 24","pages":"8528-8529"},"PeriodicalIF":4.1,"publicationDate":"2024-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10771614","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142753800","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-25DOI: 10.1109/JLT.2024.3505415
Chuanchuan Yang;Hao Qin;Tianxiang Lan;Yunfeng Gao;Jiaxing Wang;Yuping Zhao;Constance J. Chang-Hasnain
The vertical-cavity surface-emitting lasers and multimode fiber (VCSEL-MMF) solution has successfully emerged in optical interconnects (OIs), which meets the challenges of signal impairments in ultra-high-speed scenarios. Deep learning (DL) techniques, which can approximate any nonlinear function, enable the design of communication systems by carrying out the optimization in a single end-to-end (E2E) process including the transceivers as well as communication channels. In this paper, we propose a hidden feature extraction learning method for neural network equalization to improve training efficiency without increasing computational burden. Superior bit error rate (BER) is demonstrated in achieving 288 Gb/s 100 m VCSEL-MMF interconnect compared with black-box training strategy. Furthermore, an E2E joint equalization and low-density parity-check (LDPC) decoding method is proposed to improve the overall performance. Based on the autoencoder (AE) architecture, the E2E network involves a digital pre-distorter (DPD), a digital optical link model, a feed forward equalizer (FFE) and a deep learning based Normalized Offset Min-Sum (DL-NOMS) LDPC decoder. Experimental results demonstrate that the BER performance of the proposed E2E scheme is two-magnitude lower than the E2E equalization and FFE+DL-NOMS decoding method in back-to-back (BTB) and 100 m VCSEL-MMF links.
{"title":"Hidden Feature Extraction Learning and End-to-End Joint Equalization With LDPC Decoding Method for Optical Interconnect","authors":"Chuanchuan Yang;Hao Qin;Tianxiang Lan;Yunfeng Gao;Jiaxing Wang;Yuping Zhao;Constance J. Chang-Hasnain","doi":"10.1109/JLT.2024.3505415","DOIUrl":"https://doi.org/10.1109/JLT.2024.3505415","url":null,"abstract":"The vertical-cavity surface-emitting lasers and multimode fiber (VCSEL-MMF) solution has successfully emerged in optical interconnects (OIs), which meets the challenges of signal impairments in ultra-high-speed scenarios. Deep learning (DL) techniques, which can approximate any nonlinear function, enable the design of communication systems by carrying out the optimization in a single end-to-end (E2E) process including the transceivers as well as communication channels. In this paper, we propose a hidden feature extraction learning method for neural network equalization to improve training efficiency without increasing computational burden. Superior bit error rate (BER) is demonstrated in achieving 288 Gb/s 100 m VCSEL-MMF interconnect compared with black-box training strategy. Furthermore, an E2E joint equalization and low-density parity-check (LDPC) decoding method is proposed to improve the overall performance. Based on the autoencoder (AE) architecture, the E2E network involves a digital pre-distorter (DPD), a digital optical link model, a feed forward equalizer (FFE) and a deep learning based Normalized Offset Min-Sum (DL-NOMS) LDPC decoder. Experimental results demonstrate that the BER performance of the proposed E2E scheme is two-magnitude lower than the E2E equalization and FFE+DL-NOMS decoding method in back-to-back (BTB) and 100 m VCSEL-MMF links.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"43 4","pages":"1746-1758"},"PeriodicalIF":4.1,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-20DOI: 10.1109/JLT.2024.3503764
Daniel J. Elson;Mindaugas Jarmolovičius;Vitaly Mikhailov;Jiawei Luo;Daryl Inniss;Shohei Beppu;Glenn Baxter;Ralf Stolte;Luke Stewart;Shigehiro Takasaka;Eric Sillekens;Robert I. Killey;Polina Bayvel;Noboru Yoshikane;Takehiro Tsuritani;Yuta Wakayama
A record continuous transmission bandwidth of 16.4 THz is demonstrated in O-band fibre transmission over an 80-km single-mode ultra low-loss fibre span. Bismuth-doped fibre amplifiers with an output power of 25 dBm and a low noise figure of 3.6 dB compensate a loss of 80-km fibre span. An O-band wavelength selective switch with a 16.4 THz bandwidth maximises the transmission capability and enabled optimisation of the input spectrum shape to reduce nonlinear interference near zero dispersion, resulting in a potential achievable information rate of over 100 Tb/s to be reached.
{"title":"Continuous 16.4-THz Bandwidth Coherent DWDM Transmission in O-Band Using a Single Fibre Amplifier System","authors":"Daniel J. Elson;Mindaugas Jarmolovičius;Vitaly Mikhailov;Jiawei Luo;Daryl Inniss;Shohei Beppu;Glenn Baxter;Ralf Stolte;Luke Stewart;Shigehiro Takasaka;Eric Sillekens;Robert I. Killey;Polina Bayvel;Noboru Yoshikane;Takehiro Tsuritani;Yuta Wakayama","doi":"10.1109/JLT.2024.3503764","DOIUrl":"https://doi.org/10.1109/JLT.2024.3503764","url":null,"abstract":"A record continuous transmission bandwidth of 16.4 THz is demonstrated in O-band fibre transmission over an 80-km single-mode ultra low-loss fibre span. Bismuth-doped fibre amplifiers with an output power of 25 dBm and a low noise figure of 3.6 dB compensate a loss of 80-km fibre span. An O-band wavelength selective switch with a 16.4 THz bandwidth maximises the transmission capability and enabled optimisation of the input spectrum shape to reduce nonlinear interference near zero dispersion, resulting in a potential achievable information rate of over 100 Tb/s to be reached.","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"43 4","pages":"1813-1818"},"PeriodicalIF":4.1,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143438390","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-11-14DOI: 10.1109/JLT.2024.3497622
{"title":"TechRxiv: Share Your Preprint Research with the World!","authors":"","doi":"10.1109/JLT.2024.3497622","DOIUrl":"https://doi.org/10.1109/JLT.2024.3497622","url":null,"abstract":"","PeriodicalId":16144,"journal":{"name":"Journal of Lightwave Technology","volume":"42 22","pages":"8072-8072"},"PeriodicalIF":4.1,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10753569","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142636377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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