All-optical amplitude-shift keying and differential phase-shift keying to differential phase amplitude-shift keying format combination in highly nonlinear fiber  

作　　者：吴琳 张德朝 张帆 陈章渊 徐安士 

机构地区：[1]State Key Laboratory of Advanced Optical Communication Systems and Networks, Electronics Department, Peking University

出　　处：《Chinese Optics Letters》2009年第7期564-567,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China (Nos. 60736003 and 60877045);the National "863" Project of China(Nos. 2006AA01Z253 and 2006AA01Z261);sponsored by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry;the donation of VPI software suite from Alexander von Humboldt Foundation

摘　　要：We propose an all-optical modulation formats combination scheme that merges an amplitude-shift keying （ASK） signal and a differential phase-shift keying （DPSK） signal into a single differential phase amplitude- shift keying （DPASK） signal based on parametric amplification in a highly nonlinear fiber. By optimizing the power of the ASK channel, formats combination of ASK and DPSK to DPASK signal is successfully demonstrated by computational simulation. The demodulation process of the generated DPASK pulses is investigated and the relationship between optical signal-to-noise ratio （OSNR） penalty and the input ASK power is presented. The proposed scheme may be used for increasing spectral efficiency and all-optical logic device.We propose an all-optical modulation formats combination scheme that merges an amplitude-shift keying （ASK） signal and a differential phase-shift keying （DPSK） signal into a single differential phase amplitude- shift keying （DPASK） signal based on parametric amplification in a highly nonlinear fiber. By optimizing the power of the ASK channel, formats combination of ASK and DPSK to DPASK signal is successfully demonstrated by computational simulation. The demodulation process of the generated DPASK pulses is investigated and the relationship between optical signal-to-noise ratio （OSNR） penalty and the input ASK power is presented. The proposed scheme may be used for increasing spectral efficiency and all-optical logic device.

关 键 词：AMPLIFICATION Light modulation Logic devices Optical devices Phase shift Phase shift keying Signal to noise ratio Spectrum analyzers 

分 类 号：TN929.11[电子电信—通信与信息系统]