Generation of coherent optical multi-carriers using concatenated,dual-drive Mach-Zehnder and phase modulators  

作　　者：邹书敏 王一光 邵宇丰 张俊文 余建军 迟楠 

机构地区：[1]State Key Laboratory of ASIC and System,Department of Communication Science and Engineering,Fudan University

出　　处：《Chinese Optics Letters》2012年第7期19-23,共5页中国光学快报（英文版）

基　　金：supported by the National "973" Program of China(No.2010CB328300);the National Natural Science Foundation of China(Nos. 61107064,61177071,and 600837004);the Doctoral Fund of Ministry of Education;the Open Fund of the State Key Lab of ASIC & System(No.11MS009);the Pujiang Fund;the Shuguang Fund

摘　　要：The generation of coherent optical subcarriers based on a concatenated dual-drive Mach-Zehnder intensity modulator （IM） and two phase modulators （PMs） is proposed and experimentally demonstrated. The modulation index and DC bias of PM＋IM modulation are theoretically investigated. Theoretical analysis and numerical study are also carried out to examine the proposed scheme. We use 25-GHz RF synchronous sinusoidal signals to drive cascaded two-stage PMs and IM, through which we generate 28 subcaxriers with peak power fluctuations less than 4 dB. The measured tone-to-noise ratio of the subcarrier is higher than 40 dB. The experimental results show that for 100-Gb/s polarization multiplexing QPSK signal, the receiver sensitivity of the back-to-back signal is -28.6 dBm, and the power penalty is lower than 1 dB after 100-km transmission at the BER of 1 × 10-9.The generation of coherent optical subcarriers based on a concatenated dual-drive Mach-Zehnder intensity modulator （IM） and two phase modulators （PMs） is proposed and experimentally demonstrated. The modulation index and DC bias of PM＋IM modulation are theoretically investigated. Theoretical analysis and numerical study are also carried out to examine the proposed scheme. We use 25-GHz RF synchronous sinusoidal signals to drive cascaded two-stage PMs and IM, through which we generate 28 subcaxriers with peak power fluctuations less than 4 dB. The measured tone-to-noise ratio of the subcarrier is higher than 40 dB. The experimental results show that for 100-Gb/s polarization multiplexing QPSK signal, the receiver sensitivity of the back-to-back signal is -28.6 dBm, and the power penalty is lower than 1 dB after 100-km transmission at the BER of 1 × 10-9.

关 键 词：Phase modulation Quadrature phase shift keying 

分 类 号：TN761[电子电信—电路与系统] TU661.03[建筑科学—建筑技术科学]