摘要
将取样光纤光栅看成一个多层薄膜体系,每层膜用界面传输矩阵和膜层传输矩阵表示,将每层的传输矩阵相乘后得到取样光纤光栅的反射谱。数值计算结果表明:取样光纤光栅的总长度、折射率调制深度、占空比、取样周期和啁啾系数等参数都会影响反射谱的峰值和带宽。该模型的精度满足设计要求。
Sampled fiber grating is looked on as a multiple-thin film stack. Each film is represented by the interface T-matrix and layer T-matrix. The reflective spectrum is obtained by multiplying the T-matrix of each film. The numerical calculation results showed that the maximum of reflective spectrum and bandwidth of super-structured fiber grating depends on its total length, modulating the amplitude of the refractive index, duty cycle T, sampling period P and chirped coefficient C. The model's accuracy can be satisfied.
出处
《光学技术》
EI
CAS
CSCD
北大核心
2005年第3期460-462,共3页
Optical Technique
基金
西南交通大学基础发展研究基金资助(2002B03)
关键词
取样光纤光栅
多层膜
传输矩阵
反射谱
sampled fiber grating
multiple_thin films
transfer(T) matrix
reflective spectrum
