基于等效相移光栅的双用户光码分多址系统  

Demonstration of two-user OCDMA system based on superstructured fiber Bragg grating encoder/decoder with equivalent phase shift

作　　者：燕萌[1] 姚敏玉[1] 张洪明[1] 章壮前[1] 李王哲[1] 吴庆伟[1] 

机构地区：[1]清华大学电子工程系集成光电子学国家重点实验室,北京100084

出　　处：《光电子．激光》2008年第5期616-619,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60477021)

摘　　要：报道了基于等效相移光纤光栅编/解码器的2.5G b/s双用户光码分多址系统。系统中的两个并发用户可以各自独立地解码,并得到清晰的眼图。测量了单用户情况下系统的误码率曲线,误码率为10-9时编/解码引起的功率代价为0.7 dB。实验表明,使用基于等效相移光栅的编/解码器能够搭建可容纳多个用户的光码分多址系统。A two-user OCDMA system based on superstructured fiber Bragg grating（SSFBG） encoder/decoder with equivalent phase shift is demonstrated. Each user can be decoded independently, and clear eye diagrams is achieved. In single user scenario,the system bit-error-rate （BER） curve is measured. At 10^-9 BER level,a 0.7 dB power penalty is observed and attributed to the non-ideal encoding/decoding process. Experiment results prove that multi-user OCDMA system can be built based on SSFBG en/decoder with equivalent phase shift.

关 键 词：光通信技术 光码分多址 超结构光纤布拉格光栅 等效相移 

分 类 号：TN929.11[电子电信—通信与信息系统]