Robustness estimation of software-synchronized all-optical sampling for fiber communication systems  

作　　者：杨爱英 吴翔宇 孙雨南 

机构地区：[1]Department of Opto-Electronic Engineering,Beijing Institute of Technology

出　　处：《Chinese Optics Letters》2009年第3期194-197,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Sci-ence Foundation of China (No. 60777024);the Open Fund of Key Laboratory of Optical Communication and Lightwave Technologies,Beijing University of Posts and Telecommunications, Ministry of Education, China

摘　　要：The robustness of the software-synchronized all-optical sampling for optical performance monitoring is estimated for 10-Gb/s fiber communication systems. It reveals that the software-synchronized algorithm is sensitive to the signal degradation caused by chromatic dispersion and nonlinearity in optical fibers. The influence of timing jitter and amplitude fluctuation of the sampling pulses is also investigated. It is found that stringent requirements are imposed on the quality of the sampling pulse and the tolerance of 1-dB Q penalty is measured. Considering the practically available optical sampling pulse sources, the results indicate that the amplitude fluctuation of the sampling pulses has the dominant impacts on the software-synchronized method.The robustness of the software-synchronized all-optical sampling for optical performance monitoring is estimated for 10-Gb/s fiber communication systems. It reveals that the software-synchronized algorithm is sensitive to the signal degradation caused by chromatic dispersion and nonlinearity in optical fibers. The influence of timing jitter and amplitude fluctuation of the sampling pulses is also investigated. It is found that stringent requirements are imposed on the quality of the sampling pulse and the tolerance of 1-dB Q penalty is measured. Considering the practically available optical sampling pulse sources, the results indicate that the amplitude fluctuation of the sampling pulses has the dominant impacts on the software-synchronized method.

关 键 词：Communication systems Computer software Optical fibers Signal filtering and prediction Timing jitter 

分 类 号：TN929.11[电子电信—通信与信息系统] TN953.2[电子电信—信息与通信工程]