Spectrally sliced heterodyne coherent receiver with halved electrical bandwidth  

作　　者：Qi Wu Yixiao Zhu Ziyu Cheng Longjie Yin Weisheng Hu 吴琪;朱逸萧;程子钰;尹龙杰;胡卫生(State Key Laboratory of Advanced Optical Communication Systems and Networks,Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]State Key Laboratory of Advanced Optical Communication Systems and Networks,Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Chinese Optics Letters》2022年第9期8-13,共6页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.62001287);National Key R&D Program of China(No.2018YFB1800904)。

摘　　要：A spectrally sliced heterodyne coherent receiver(SHCR)employing four balanced photodetectors and analog-to-digital converters with half of the signal bandwidth is proposed to complete the signal reception and field recovery.We first numerically characterize the performance of SHCR compared with an intradyne coherent receiver and then validate the principle of the SHCR in a proof-of-concept single-polarization experiment.A 60 GBaud 16-quadrature amplitude modulation transmission is experimentally demonstrated over 80 km standard single-mode fiber with a bit-error-rate of 8.5×10^(-4) below the 7%hard-decision forward error correction threshold of 3.8×10^(-3).The SHCR offers a low-cost,hybrid-free,and channel-skew-tolerant candidate for data center interconnects.

关 键 词：sliced heterodyne coherent receiver HETERODYNING spectral slicing electrical bandwidth. 

分 类 号：TN851[电子电信—信息与通信工程]