通信学报2024，Vol.45Issue(6)：187-195,9.DOI:10.11959/j.issn.1000-436x.2024108
基于单PD直接检测Twin-SSB-QPSK信号的光纤通信系统
Single photodiode-based direct detection for Twin-SSB-QPSK signal in optical fiber communication systems
摘要
Abstract
To address the high-cost issue of twin single sideband quadrature phase shift keying(Twin-SSB-QPSK)sig-nals in optical transmission,a optical fiber communication system was proposed,in which a single photodetector(PD)was employed at the receiver to directly detect the Twin-SSB-QPSK signals.At the receiver end,optical bandpass filter(OBPF)was not required to separate the two optical single sideband signals of the Twin-SSB-QPSK signal.Instead,the heterodyne effect of direct detection was utilized,allowing a single PD to directly detect the coherent superposition of the twin two optical single sideband QPSK signals,resulting in a single 16-ary quadrature amplitude modulation(16QAM)signal.Simulations demonstrated that two 56 Gbit/s QPSK signals were combined into a single 112 Gbit/s 16QAM signal and then compared with the traditional single 16QAM signal transmission scheme.The simulation results indicate that the proposed scheme does not introduce additional power penalties while reducing the system device re-quirements and deployment costs.关键词
光纤通信/正交相移键控/正交幅度调制/信号合成/直接检测Key words
optical fiber communication/quadrature phase shift keying/quadrature amplitude modulation/signal synthe-sis/direct detection分类
信息技术与安全科学引用本文复制引用
张洪波,刘娇,凌味未,张敏,万峰,蔡炬..基于单PD直接检测Twin-SSB-QPSK信号的光纤通信系统[J].通信学报,2024,45(6):187-195,9.基金项目
四川省科技计划基金资助项目(No.2021YFG0149)The Science and Technology Plan Project of Sichuan Province(No.2021YFG0149) （No.2021YFG0149）
