A flexible multi-16QAM transmitter based on cascaded dual-parallel Mach-Zehnder modulator and phase modulator  

作　　者：ZHANG Liang HU XiaoFeng CAO Pan ZHUANG ZhiMing JIANG XinHong SU YiKai 

机构地区：[1]State Key Laboratory of Advanced Optical Communication Systems and Networks,Department of Electronic Engineering,Shanghai Jiao Tong University

出　　处：《Chinese Science Bulletin》2013年第7期598-602,共5页

基　　金：supported by the National Natural Science Foundation of China (Grant Nos.61077052 and 61125504);the National High-Tech Research & Development Program of China ("863" Program) (Grant No. SS2013AA010502)

摘　　要：In this paper,we propose a novel and flexible 16-quadrature amplitude modulation(16QAM) transmitter based on cascaded dual-parallel Mach-Zehnder modulator(DPMZM) and phase modulator(PM).The proposed transmitter is able to generate three types of 16QAM signals:square 16QAM,star 16QAM and four-amplitude-four-phase-16-QAM(FAFP-16QAM).The feasibility of the transmitter is verified through experiment,20-Gb/s eye diagrams of the 16QAM signals are obtained.In order to evaluate the performances of the 16QAM signals,simulations are also conducted using VPI Transmission Maker,clear constellations of 40-Gb/s 16QAM signals are achieved by coherent detection.In this paper, we propose a novel and flexible 16-quadrature amplitude modulation （16QAM） transmitter based on cascaded dual-parallel Mach-Zehnder modulator （DPMZM） and phase modulator （PM）. The proposed transmitter is able to generate three types of 16QAM signals： square 16QAM, star 16QAM and four-amplitude-four-phase-16-QAM （FAFP-16QAM）. The feasibility of the transmitter is verified through experiment, 20-Gb/s eye diagrams of the 16QAM signals are obtained. In order to evaluate the performances of the 16QAM signals, simulations are also conducted using VPI Transmission Maker, clear con- stellations of 40-Gb/s 16QAM signals are achieved by coherent detection.

关 键 词：16QAM 相位调制器 发射器 马赫 平行 级联 QAM信号 正交幅度调制 

分 类 号：TN941.3[电子电信—信号与信息处理] TN761[电子电信—信息与通信工程]