纤内马赫-曾德尔结构优化光纤环镜滤波器研究  

Study on characteristics of fiber loop mirror filters based on single fiber Mach-Zehnder optimization

作　　者：吕正兵[1] 董兴法[1] 丁祥霞 姜莉[1] 吴婧[1] 

机构地区：[1]苏州科技大学光电与信息技术研究所,江苏苏州215011

出　　处：《光电子．激光》2016年第9期918-922,共5页Journal of Optoelectronics·Laser

基　　金：江苏省青蓝工程中青年学术带头人项目(2010-101);江苏省企业研究生工作站(2012-0819)资助项目

摘　　要：在单模光纤（SMF）上拉出级联对称缓锥,形成马赫 -曾德尔干涉仪（MZI）结构,将其置入光纤环镜中, 理论和实验研究了它对滤波器特性的改善。环镜滤波器的透射谱由MZI和Sagnac干涉 结合的非相干叠加而成,调谐MZI能实现可调谐滤波。实验表明,滤波器在自由谱60nm（1425-1485nm）范围内可提高梳状滤波 器的滤波器特性,实现了可调谐滤波。本文结构输出波形稳定, 调制深度大于20dB,优化了光纤环镜滤波特性。In the single-mode fiber,the cascaded symmetric slow taper was pulled out and t he structure of Mach-Zehnder interferometer （MZI）,which was put into the optical fiber loop mirror.The improvement of the filter characteristics of the new-kind MZI is stu died experimentally.The transmission spectrum of loop mirror filter is formed by the noncoherent su perposition of MZI and Sagnac interference,and the tunable filter ca n be realized by tuning the new type MZI.The experimental results show that the filter can improve the characteristics of the comb filter in the range of free spectrum within 60nm （1425- 1485nm）,and the tunable filter can be realized.The output waveform of the structure is stable,the modulation depth is greater than 20dB,and the filterin g characteristics of the fiber loop mirror are optimized.

关 键 词：光纤光学 滤波器 对称缓锥 光纤环镜 

分 类 号：TN253[电子电信—物理电子学]