Simultaneous clock recovery and demultiplexing of a 320 Gb/s OTDM system using an optoelectronic oscillator based on cascaded MZM and PolM

作     者：稽誉 贾锡学 李岩 伍剑 林金桐 

作者机构：State Key Laboratory of Information Photonics and Optical CommunicationsBeijing University of Posts and Telecommunications 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2013年第11卷第5期

页      面：12-15页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：partly supported by the National"863"Program of China(No.2012AA011303) the National"973"Program of China(No.2011CB301702) the National Natural Science Foundation of China(Nos.61001121,60932004,and 61006041) the Fundamental Research Funds for the Central Universities BUPT Excellent Ph.D.Students Foundation(No.CX201222) 

主　　题：Demultiplexing Light modulators Optoelectronic devices Timing jitter Ultrashort pulses 

摘      要：An improved optoelectronic oscillator scheme for an optical time division multiplexing （OTDM） system based on cascaded Mach-Zehnder modulator （MZM） and polarization modulator （PolM） is experimentally investigated. The system can simultaneously realize clock recovery and demultiplexing. With the MZM working at peak point to generate return-to-zero-33 optical pulses and the PolM working as an equivalent intensity modulator, a high-quality clock signal with 35-fs timing jitter is extracted from the 160-GBaud OTDM-differential quaternary phase-shift keying signal. Narrow short optical switch gates （4 ps） are also generated to demultiplex 160-GBaud signals to 40-GBaud signals. Error-free performance is achieved with 2.4-dB power penalty in the worst case.