Evans双折射滤波器特性分析

Analysis to character of Evans filter

为了从理论上对Evans滤波器的性质进行研究,利用Mueller矩阵和Stokes参量进行理论分析,得到了Evans双折射滤波器的透射比,自由光谱范围和通带半高宽的公式。分析结果表明自由光谱范围和通带半高宽随干涉级次的变大单调下降;自由光谱范围和通带半高宽随波长变长单调上升,并近似是线性关系。

Using Mueller matrix and Stokes parameter, transmittance, free spectral range （FSR） and full width at half maximum （FWHM） of Evans filter were theoretically analysed, the formula of transmission, free spectral range and full width at half maximum were given. The full width at half maximum and free spectral range monotone decline with interfere levels . And rise with wavelength and approximate linear relationship.