基于马赫-曾德尔干涉仪和光纤光栅的光分插复用器  

Research of Optical Add-Drop Multiplexer Based on Mach-Zehnder Interferometer and Fiber Bragg Grating

作　　者：黄勇林[1] 董兴法[1] 李杰[2] 董孝义[2] 

机构地区：[1]苏州科技学院电子系,江苏苏州215011 [2]南开大学现代光学研究所,天津300071

出　　处：《中国激光》2005年第3期423-426,共4页Chinese Journal of Lasers

基　　金：建设部信息化项目(01 4 048);天津市自然科学基金(013601811)资助项目.

摘　　要：光分插复用器(OADM)是波分复用(WDM)系统中的关键器件之一.提出了一种结构新颖的基于马赫曾德尔(M Z)干涉仪和光纤光栅(FBG)的光分插复用器,它由两个三端口光环形器、一个光纤光栅和一个马赫曾德尔干涉仪组成,马赫曾德尔干涉仪起着光开关的作用.对光分插复用器的输出特性进行了实验研究,实验中调节干涉仪的臂长差,可以实现信号的上下载或直通功能,上下载时通道的隔离度大于20 dB.这种结构的光分插复用器具有结构简单、体积小、价格低等优点,在波分复用技术中具有实际应用价值.Optical add-drop multiplexer (OADM) is one of the key components for wavelength division multiplexing (WDM) system. A novel OADM based on Mach-Zehnder (M-Z) interferometer and fiber Bragg grating (FBG) is proposed. The OADM consists of two three-port optical circulators, a FBG, and a M-Z interferometer. In the structure, the M-Z interferometer acts as an optical switch. The characteristic of the OADM is studied experimentally. In the experiment, the OADM can add/drop one of the multi input channel or pass the channel directly by adjusting the difference of the two arms of the interferometer. The channel isolation is more than 20 dB. The OADM has many advantages such as simple structure, small size and low cost. It can be used in practical WDM system.

关 键 词：光通信 光分插复用器 马赫曾德尔干涉仪 光纤光栅 

分 类 号：TN929.11[电子电信—通信与信息系统]