FBG编解码器在W-OCDMA系统中的应用  

Application of FBG encoder and decoder in W-OCDMA system

作　　者：周秀丽[1] 胡渝[1] 林佩[1] 

机构地区：[1]电子科技大学物理电子学院,四川成都610054

出　　处：《光电工程》2004年第12期50-53,共4页Opto-Electronic Engineering

基　　金：国家自然科学基金资助项目(60272006)

摘　　要：针对大容量二维组合码,提出一种可调光纤布拉格光栅(FBG)编解码器的设计方法,该设计方法利用了光纤布拉格光栅的反射和可调谐特性,所得编解码器结构简单、容易集成、变址容易。在 OOK调制输出速率为 1Gbit/s,输出功率为 1mW的 W-OCDMA 系统仿真实验中,该 FBG编解码器结构实现了正确的编解码,时间延迟 1ns,功率损耗约 1dB,并且具有良好的匹配滤波特性。该 FBG 编解码器将是适用于 W-OCDMA 系统较为理想的器件。By utilizing the reflection and tunable characteristics of Fiber Bragg Grating (FBG), a method is presented to design the tunable FBG encoder and decoder, in view of the proposed two-dimensional mass code. The devices are simply structured, easy to be integrated, and naturally agile to modify address. The simulation of W-OCDMA system, on the condition of 1Gbit/s On-Off Key modulation output rate and 1mw output power, shows that the performance of coding and decoding with 1ns time delay and 1dB power loss, especially the matched filtering performance is satisfied for application. The FBG encoder and decoder would be ideal devices for W-OCDMA system.

关 键 词：光纤布拉格光栅 光码分多址 编码器 解码器 

分 类 号：TN762[电子电信—电路与系统]