A novel scheme to generate 40-GHz CSRZ pulse trains using a 10-GHz dual-parallel Mach-Zehnder modulator  

作　　者：邢燕飞 娄采云 

机构地区：[1]Tsinghua National Laboratory for Information Science and Technology,State Key Laboratory of Integrated Optoelectronics,Department of Electronic Engineering,Tsinghua University

出　　处：《Chinese Optics Letters》2011年第1期28-31,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.60736036);the National "863" Program of China (No.2009AA01Z256);the Beijing Supporting Program (No.YB20091000301)

摘　　要：A new technique to generate 40-GHz carrier-suppressed return-to-zero （CSRZ） optical pulse trains using only a 10-GHz dual-parallel Mach-Zehnder modulator （MZM） is presented and experimentally demon- strated. The spectrum of the generated CSRZ pulses is calculated by simulation and compared with conventional MZM-based RZ and CSRZ pulse trains. The experimental results demonstrate that CSRZ pulse trains are obtained, and that the carrier and the unwanted 20-GHz low-frequency component are suppressed by 25 dB. The technique can also be extended to 160-GHz CSRZ pulse generation when 40-GHzA new technique to generate 40-GHz carrier-suppressed return-to-zero （CSRZ） optical pulse trains using only a 10-GHz dual-parallel Mach-Zehnder modulator （MZM） is presented and experimentally demon- strated. The spectrum of the generated CSRZ pulses is calculated by simulation and compared with conventional MZM-based RZ and CSRZ pulse trains. The experimental results demonstrate that CSRZ pulse trains are obtained, and that the carrier and the unwanted 20-GHz low-frequency component are suppressed by 25 dB. The technique can also be extended to 160-GHz CSRZ pulse generation when 40-GHz

关 键 词：Light modulators LOCOMOTIVES Railroad cars 

分 类 号：TN761[电子电信—电路与系统] TM935.41[电气工程—电力电子与电力传动]