光栅折射率调制对光纤Bragg光栅特性的影响  

Influence of refractive index modulation on fiber Bragg grating characteristics

作　　者：李松柏[1] 邓涛[2] 吴加贵[2] 

机构地区：[1]长江师范学院物理学及电子信息工程系,重庆408100 [2]西南大学物理学院,重庆400715

出　　处：《光通信研究》2009年第5期60-62,70,共4页Study on Optical Communications

基　　金：重庆市教委科技基金资助项目(KJ081120)

摘　　要：文章基于耦合模理论,采用传输矩阵法数值分析了光栅折射率调制对光纤Bragg光栅(FBG)特性的影响。结果表明:随着折射率调制深度的加深,光栅的反射谱峰值波长发生蓝移,峰顶变得平坦;光栅时延的最小值发生在光栅的Bragg波长处;峰值反射率增大,峰值半宽(FWHM)呈线性变化。On the basis of the coupled mode theory, this paper numerically analyzes the effects of refractive index modulation on Fibre Bragg Grating （FBG） characteristics by using the transfer matrix method. The results show that, with the deepening of the refractive index modulation, the peak wavelength of the reflection spectrum is blue-shifted and the peak top becomes flat- tened, the minimum value of the grating delay occurs at the Bragg wavelength, the peak refractive rate increases and the Full Width Half Maximum （FWHM） of the peak varies linearly.

关 键 词：光纤BRAGG光栅 传输矩阵 折射率调制 

分 类 号：TN253[电子电信—物理电子学]