Photonic generation of triangular and rectangular waveforms based on four-wave mixing effect  

作　　者：YUAN Jin WANG Yujie ZHANG Hui ZHANG Mengsi LI Zengrui 

机构地区：[1]State Key Laboratory of Media Convergence and Communication,Communication University of China,Beijing 100044,China

出　　处：《Optoelectronics Letters》2022年第1期6-12,共7页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.62105306)

摘　　要：A photonic approach that can generate triangular and rectangular waveforms is proposed.A dual-electrode Mach-Zehnder modulator(De-MZM)is used to fulfill the external optical carrier suppression(OCS)modulation of a continuous wave(CW).The follow-up four-wave mixing(FWM)in a semiconductor optical amplifier(SOA)makes four primary sidebands exist in the spectrum.Then filtering and optical carrier recovery techniques are used to construct the spectrum aligning with that of a triangular/rectangular waveform.In this work,we also elaborate the influence of errors of key device parameters,by which the feasibility and stability of the system have been verified.Based on this photonic approach,a 10 GHz full-duty-cycle triangular waveform and a 50%-duty-cycle rectangular waveform are successfully obtained.This approach provides a feasible method to generate multiple waveforms.

关 键 词：spectrum. TRIANGULAR RECTANGULAR 

分 类 号：O43[机械工程—光学工程]