光纤布喇格光栅的理论分析  

THEORETICAL ANALYSES OF FIBER BRAGG GRATINGS

作　　者：金发宏[1] 董孝义[1] 刘志国[1] 盛秋琴[1] 

机构地区：[1]南开大学现代光学研究所

出　　处：《光子学报》1996年第9期809-813,共5页Acta Photonica Sinica

摘　　要：本文从耦合模理论出发推导了光纤布喇格光栅的最大反射系数和反射主峰带宽的表达式，以此为基础具体分析了相移光栅，导出了一些有重要意义的结果。Based on the coupled mode equation,the general expressions for reflectivity and approxi-mate FWHM bandwidth of a fibre Bragg grating are deduced. We discussed the properties of phase-shifted grating and derived important results. The phase shifts of phase-shifted grating open up nar-rowband transmission windows inside the stop band of the grating,transmitted wavelength can bechanged by adjusting the amount of phase shift.The calculation and the results are given. This kind ofgrating can be used to make an all-fiber demultiplexer for multichannel lightwave systems.

关 键 词：光纤 布喇格光栅 啁啾光栅 相移 光栅 

分 类 号：TN256[电子电信—物理电子学]