摘要
设计了一种用于光纤传感的新型非对称法布里—珀罗(F-P)干涉腔。干涉腔由固定在石英毛细管的两根镀膜光纤构成,该干涉腔改善了普通F-P腔的反射响应特性,有助于提高传感器的灵敏度和测量范围。基于薄膜干涉理论对该干涉腔的反射率响应关系的计算与分析,得出该非对称F-P腔的结构参数。设计结果表明,这种新型干涉腔具有线性度好、灵敏度高和线性范围宽的优点。
A novel asymmetric Fabry-Pérot （F-P） interferometric cavity applied to fiber optical sensors is designed in this paper. Its structure consists of two coated tiber fixed in a capillary glass tube. The cavity improves the reflective response of common F-P cavity, so it can enhance the sensitivity and the dynamic range of the sensor. The response of the reflectance of this structure has been calculated and analyzed with optical thin film characteristic matrix theory, the optimal parameters of the F-P interferometric structure have been obtained. The result indicates that this miniature structure possesses a high degree of linearity, sensitivity and dynamic range.
出处
《光学仪器》
2006年第4期14-17,共4页
Optical Instruments
基金
国家973计划课题资助项目(203CB314901)
