可调谐光纤F-P线性滤波器的设计与分析

光纤滤波器在光纤通信和光纤传感领域发挥着重要的作用。本文基于光学薄膜干涉理论设计了一种用于光纤传感的可调谐F-P线性滤波器,该滤波器由两端面相对的入射光纤与出射光纤构成,两光纤端端面分别镀有反射光纤薄膜。该F-P干涉腔改善了传统F-P腔的透射率响应特性,有助于提高滤波器的线性度和线性范围。本文采用光学薄膜干涉矩阵分析法对该滤波器的透射率响应关系进行了计算与分析,并得出该FP滤波器的结构参数。设计结果表明,这种新型线性滤波器具有线性度好、线性范围宽和线性区间可调的优点。

Design and analysis of optical fiber F-P tunable linear filter

Optical fiber filter plays an important role in the field of optical fiber communication and optical fiber sensing. A tunable F-P linear filter is designed basing on optical thin film the outgoing optical fibers, and two fiber end are respectively coated with reflective optical thin film. The F-P interferometric cavity improves the traditional F-P cavity transmittance response characteristics and helps to improve the linearity and linear range filter. The opti-cal thin film interference matrix analysis method on the transmission of the filter response is calculated and analyzed. The design results show that the new linear filter, this has the advantages of good linearity, wide linear range and lin-ear interval adjustable.