基于相移光栅的Sagnac环滤波器的光谱特性分析  

Spectral properties in the filter based on phase-shifted grating and Sagnac loop

作　　者：王露[1] 武向农[1] 周明[1] 

机构地区：[1]上海师范大学信息与机电工程学院,上海200234

出　　处：《上海师范大学学报（自然科学版）》2016年第5期548-554,共7页Journal of Shanghai Normal University(Natural Sciences)

基　　金：上海市自然科学基金面上项目(13ZR1430400);上海市教委科研创新一般项目(14YZ070)

摘　　要：提出了一种基于相移光栅的Sagnac环滤波器的设计.利用Jones矩阵法,建立了该滤波器的理论模型,推导出了传输谱的表达式,并对其进行数值仿真和分析.重点讨论了相移光栅的参量、光纤环臂差对传输光谱的影响.通过数值模拟,得到了具有双带通的梳状滤波特性的传输光谱,可应用于光纤光栅传感和通信系统.In this paper, a filter was designed basing on the phase shift grating and Sagnac loop. The theoretical model of the filter using Jones Matrix has been established, and the expression of the transmission spectrum has been deduced. The numerical simu- lations and analysis for the transmission spectrum have been carried out. The effect of the parameters of the phase shift grating and optical fiber ring arm length difference on the transmission spectra have been mainly discussed. Through the numerical simulations, the transmission spectra of comb filter characteristics with dual band-pass have been obtained, and they can be applied in the fiber grating sensing and communication systems.

关 键 词：光纤 SAGNAC环 相移光纤光栅 传输矩阵 滤波器 

分 类 号：TN253[电子电信—物理电子学]