摘要
报道了一个无故障工作时间大于２４小时的四路１５５Ｍｂ／ｓ频分复用（ＦＤＭ）光纤通信系统，实测系统误码率优于０×１０（－１４）。系统接收机包括解复用光滤波器，接收机灵敏度优于－３０ｄＢｍ（ＢＥＲ＝１×１０（－９），频道间距为０．１ｎｍ，四路ＦＤＭ信号－２０ｄＢ的总谱宽为０．７ｎｍ。系统采用国产ＤＦＢ激光器为光源，实际光纤传输距离１８ｋｍ。系统全部实现了脱离光学平台的模块化结构，在长期的系统实验中显示了优良的稳定性。这一成果为ＦＤＭ在光纤传输接入网中的进一步实用化开发铺平了道路。
The performance of a four-channel 155Mb/ s optical frequency-division-multipleeing (OFDM)transmission over 18km is reported. The bit error rate (BER) measured is better than 0 ×10-14 in more than 24 hours of continuous system operation. The receiver sensitivity is - 30dBm(BER=1 ×10-9) which is measured before the demultiplexing FP filter. The total four-channel power spectrum width at -20dB is 0. 7nm with the channel spacing of 0. 1nm. All the components have been mounted as compact modules including the domestically manufactured DFB LD light sources. Long-term stable system operation is observed and shows a good prospect of future development for practical uses.
出处
《高技术通讯》
CAS
CSCD
1996年第10期32-36,共5页
Chinese High Technology Letters
基金
863计划及上海市科委资助
关键词
频分复用
光纤
光纤通信系统
OFDM,Optical fiber communication,FITL,AON,Cross connect
