160-Gb/s polarization-multiplexing optical NRZ-DQPSK transmission using differential detection  

作　　者：闻和 廖金鑫 郑小平 张汉一 

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

出　　处：《Chinese Optics Letters》2011年第10期30-33,共4页中国光学快报（英文版）

基　　金：supported in part by the National Natural Science Foundation of China(Nos. 60736003,61025004,and 61032005);the National "863" Program of China(Nos.2009AA01Z223 and 2009AA01Z253)

摘　　要：Using differential detection, we perform polarization-multiplexing 160-Gb/s optical non-return-to-zero （NRZ） differential quadrature phase shift keying （DQPSK） signal transmission over 100-kin standard single mode fiber at a bit error rate （BER） of less than 10^-9. The enabling technology includes clock recovery, fine dispersion compensation, and polarization tracking for de-multiplexing. Furthermore, a hybrid clock recovery scheme is proposed. The scheme is realized with ordinary devices using an optoelectrical modulator to down-convert the clock frequency and a phase-locked loop for filtering, which can provide an indication signal that simultaneously monitors residual dispersion and tracking polarization.Using differential detection, we perform polarization-multiplexing 160-Gb/s optical non-return-to-zero （NRZ） differential quadrature phase shift keying （DQPSK） signal transmission over 100-kin standard single mode fiber at a bit error rate （BER） of less than 10^-9. The enabling technology includes clock recovery, fine dispersion compensation, and polarization tracking for de-multiplexing. Furthermore, a hybrid clock recovery scheme is proposed. The scheme is realized with ordinary devices using an optoelectrical modulator to down-convert the clock frequency and a phase-locked loop for filtering, which can provide an indication signal that simultaneously monitors residual dispersion and tracking polarization.

关 键 词：Bit error rate Electric clocks Error detection MULTIPLEXING Optical communication Phase locked loops POLARIZATION Quadrature phase shift keying Signal detection Single mode fibers 

分 类 号：TN253[电子电信—物理电子学]