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根据石英晶体的旋光色散特性,利用光学矩阵方法对多级石英晶体旋光光学滤波器的滤波原理进行了详细的理论分析,推导出多级石英晶体旋光光学滤波器的透射主峰波长和通带半宽度的计算公式.利用分光光度计对单级和多级石英晶体旋光光学滤波器的滤波特性进行了实验研究,结果表明单级和多级石英晶体旋光光学滤波器滤波特性与理论曲线一致.从理论和实验上证明了多级石英晶体旋光光学滤波器与单级相比通带半宽度得到了有效的压缩,且随滤波器级数的增大,压缩的程度也随之增大.
According to the characteristics of optical rotation dispersion of quartz crystal, the optical matrix method is used to analyze the filtering theory of multi-stage quartz crystal optical filter. The main transmission peak wavelength and half-width of passband of multi-level quartz optical filter are deduced. The experimental results show that the filtering characteristics of single-stage and multi-stage quartz crystal optical filters are in agreement with the theoretical curves.From the theory Experimental results show that the half-width of the passband of multi-stage quartz crystal optically active optical filter is effectively compressed compared with that of single-stage quartz crystal optical filter, and the degree of compression increases with the increase of filter order.