摘要
Stokes vectors direct detection(SV-DD)is an effective solution for short-reach optical communications.In this Letter,we investigate two-dimensional-modulation direct-detection systems based on three Stokes vector receivers(SVRs).The influences of three key factors including the states-of-polarization(SOP),the splitting ratio of the coupler,and the excess loss(EL)are studied in detail.It is shown that the splitting ratio for achieving optimum performance will be changed with SOP and EL conditions.Among these SVRs,the3×3 coupler-based receiver with its optimal splitting ratio shows the best bit error rate performance and stability against the change of SOP.
作者
Xiaojie Shen
Jiahao Huo
Xian Zhou
Kangping Zhong
Jinhui Vuan
Jiajing Tu
Keping Long
Changyuan Yu
Alan Pak Tao Lau
Chao Lu
申晓杰;霍佳皓;周娴;钟康平;苑金辉;涂佳静;隆克平;余长源;刘伯涛;吕超(Institute of Artificial Intelligence,University of Science and Technology Beijing(USTB),Beijing 100083,China;Department of Electronic and Information Engineering,The Hong Kong Polytechnic University,Hung Horn,Kowloon,Hong Kong 999077,China;MACQM Technology Solutions,Shenzhen 518000,China;Department of Electrical Engineering,The Hong Kong Polytechnic University,Hung Horn,Kowloon,Hong Kong 999077,China)
基金
supported by the National Natural Science Foundation of China(Nos.61671053,61871030,and 61435006)
the Fundamental Research Funds for the Central Universities(No.FRF-BD-17-015A)
the Foundation of Beijing Engineering and Technology Center for Convergence Networks and Ubiquitous Services,the State Key Laboratory of Advanced Optical Communication Systems Networks,China,the Hong Kong Polytechnic University(Nos.1-ZVGB,G-SB65,and 4-BCCK)
the RGC of Hong Kong SAR Government(No.152248/15E)
