新型高隔离度OADM的光谱及传输实验研究  

Study on the Optical Spectrum and Transmission Characteristics o f a Novel High Isolation Optical Add-drop Multiplexer

作　　者：吴小萍[1] 董毅[1] 王波[1] 谢世钟[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《光电子．激光》2000年第3期248-251,共4页Journal of Optoelectronics·Laser

基　　金：国家"八六三"计划资助项目!( 863 -3 0 7-16-0 1)

摘　　要：光插分复用器 (optical add/ drop multiplexer,OADM)是波分复用系统的关键器件之一。光纤光栅器件是 OADM一种较为理想的选择。本文提出了一种新型的 OADM,它由两个环形器 ,一个光隔离器和两个光纤光栅器件构成。针对基本结构的 OADM和该新型 OADM,本文分别进行了一系列相应的性能实验。通过比较两种结构光插分复用器的 Add信号对 Drop信号的相干干扰、以及 Drop信号对 Add信号的相干串扰 ,得到了一致的结果 :对于新型结构 ,相干串扰得到完全抑制。新型Optical Add/Drop Multiplexer (OADM) is one of the key compo nents for WDM system.Device based on fiber grating is a promising candidate for OADM.In this paper,a novel optical Add/Drop multiplexer using two circulato rs,one isolator and two fiber gratings is proposed.The experiments to evaluate t he performances of the novel device compared to the ordinary one have been condu cted.The experiment results turn out that the signals produce no crosstalk on th e signals on DROP port.Meanwhile,the signals on DROP port produce no crosstalk o n the signals on ADD port either.Therefore,in the novel device,the interferometr ic crosstalk between the ADD and DROP ports is suppressed completely.One more ad vantage of the device is that the peak reflectivity is not crucial in this novel structure.

关 键 词：光纤光栅 光插分复用器 波分复用 光谱 光纤通信 

分 类 号：TN253[电子电信—物理电子学] TN929.11