Simultaneous multichannel NRZ-to-RZ format conversion of 4-ASK signal based on phase-intensity hybrid modulation and dispersion compensation fiber  

作　　者：余文科 娄采云 赵晓凡 陆丹 

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

出　　处：《Chinese Optics Letters》2010年第9期859-862,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);Beijing Municipal Foundation (No. YB20091000301)

摘　　要：We propose and investigate a novel technique to realize non-return-to-zero （NRZ） to return-to-zero （RZ） format conversion of a multichannel 4-ary amplitude shift keying （4-ASK） signal. The proposed format converter composed of two modulators and a dispersion compensating fiber （DCF） is theoretically inves-tigated using numerical simulation as basis. Research shows that a 4-channel 20-Gb/s NRZ-4-ASK signal can be converted to a RZ-4-ASK signal simultaneously without wavelength shifting and signal quality degradation, with the converted signal multiplexed to 40 Gb/s.We propose and investigate a novel technique to realize non-return-to-zero （NRZ） to return-to-zero （RZ） format conversion of a multichannel 4-ary amplitude shift keying （4-ASK） signal. The proposed format converter composed of two modulators and a dispersion compensating fiber （DCF） is theoretically inves-tigated using numerical simulation as basis. Research shows that a 4-channel 20-Gb/s NRZ-4-ASK signal can be converted to a RZ-4-ASK signal simultaneously without wavelength shifting and signal quality degradation, with the converted signal multiplexed to 40 Gb/s.

关 键 词：Dispersion compensation 

分 类 号：TN929.1[电子电信—通信与信息系统]