A novel bit-error indicating scheme using only one judge threshold  

作　　者：ZHANG ZhiYao ZHOU XiaoJun YE Tong LIANG Rui QIN ZuJun LIU Yong 

机构地区：[1]Key Laboratory of Broadband Optical Fiber Transmission & Communication Networks, Ministry of Education, School of Opto electronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China [2]National Laboratory of Local Fiber-Optic Communication Networks & Advanced Optical Communication Systems, School of Electronic Engineering, Shanghai Jiao Tong University, Shanghai 200030, China

出　　处：《Chinese Science Bulletin》2009年第20期3674-3678,共5页

基　　金：Supported by the National Natural Science Foundation of China (Grant No. 60377021);Foundation of New Century Excellent Talents in University (Grant No. NCET-07-0152);Sichuan Scientific Funds for Young Researchers (Grant No. 08ZQ026-012)

摘　　要：A novel all-optical bit-error indicating scheme based on self-phase modulation and band-pass filtering is proposed.In this scheme,the amplified original bit stream propagates through a high-nonlinear fiber where self-phase modulation occurs,and then passes through a band-pass filter to be converted to a bit-error indicating signal.In the bit-error indicating signal,the error bit has the highest peak power,and the "1" and "0" bits have lower ones.At the same time,the bit-error indicating signal is synchronous with the delayed original bit stream.Therefore,the position of the error bit in the original bit stream can be identified by setting only one judge threshold in the bit error indicating signal.The performance of this scheme has been demonstrated for an 80 Gb/s bit-stream with return-to-zero format by simulation.The results show that the proposed scheme can be used for the all-optical bit-error indicating of the super high bit-rate systems with the return-to-zero format.A novel all-optical bit-error indicating scheme based on self-phase modulation and band-pass filtering is proposed. In this scheme, the amplified original bit stream propagates through a high-nonlinear fiber where self-phase modulation occurs, and then passes through a band-pass filter to be converted to a bit-error indicating signal. In the bit-error indicating signal, the error bit has the highest peak power, and the ＂1＂ and ＂0＂ bits have lower ones. At the same time, the bit-error indicating signal is synchronous with the delayed original bit stream. Therefore, the position of the error bit in the original bit stream can be identified by setting only one judge threshold in the bit error indicating signal. The performance of this scheme has been demonstrated for an 80 Gb/s bit-stream with return-to-zero format by simulation. The results show that the proposed scheme can be used for the all-optical bit-error indicating of the super high bit-rate systems with the return-to-zero format.

关 键 词：误码 自相位调制 带通滤波器 显示信号 门槛 高非线性光纤 显示错误 峰值功率 

分 类 号：TN911.22[电子电信—通信与信息系统] TN929.11[电子电信—信息与通信工程]