用于OCDMA的光延迟线编/解码器

基于光码分复用的时域编解码原理 ,研究了光延迟线编解码器的设计及采用该编解码器的稳定性问题 ;光延迟线编 /解码器的延迟误差将严重影响系统性能 ,提出在光电检测后对信号进行低通滤波处理 ,或选用具有适当占空比的 RZ脉冲作为信号脉冲 ,可避免或减少采用这种编解码器时可能出现的甚窄脉冲

Encoder/Decoder Based on Optical Fiber Delay Lines in COCDMA

Based on the principle of encoder/decoder of optical code division multiple access (OCDMA)in time domain,this paper study the design of encoder/decoder based on optical fiber delay lines (OFDLs),and the stability of this kind of encoder/decoder;delay error of the encoder/decoder based on OFDLs will seriously influence the performance of the system,the paper proposes that when signal from the output end of decoder experience a processing of low pass filtering after optoeloctronic detection,or the RZ pulse with appropriate duty coefficient as sig norrow pulse induced by the kind of encoder/decoder can be avoided or diminished.