光纤Bragg光栅反射带宽的多参数影响仿真分析

Simulation Analysis of the Multi-parameter Influence on FBG Reflected Bandwidth

反射带宽是光纤光栅反射光谱的一个重要指标,直接影响传感应用中的测量分辨率和通信应用中作为滤波器的波长选择范围。通过对光栅反射带宽影响参数的理论和仿真分析,研究了反射带宽对各参数的敏感性,给出不同参数组合情况下反射带宽的三维变化及其等高线分布图,为满足不同应用场合的不同带宽指标要求,从光栅制作的角度提供了直观、系统的参数选择依据。

Reflected bandwidth is a key index of FBG reflection spectrum, and it has great influence on the measurement resolution in sensing application and the choice of filter wavelength range in communication application. By theoretical and simulation analysis, the sensitivity of FBG reflected bandwidth to various parameters were researched, and the three-dimensional variation and contour line distribution of reflected bandwidth under various parameters combination were given. In order to satisfy different demands of FBG reflected bandwidth in different application occasions, the research provide visualized and systematic parameter selection basis from manufacturing perspective.