纤维光锥有效透过率的理论分析  

Theoretical Analysis of the Effective Transmission About Fiber Taper

作　　者：王耀祥[1] 田维坚[1] 章兴龙[1] 于慧霞[1] 王佑权[1] 刘晓峰[1] 

机构地区：[1]中国科学院西安光学精密机械研究所光纤与集成光学研究室,西安710068

出　　处：《光子学报》2005年第4期529-533,共5页Acta Photonica Sinica

基　　金：国家 863计划(2002AA716021)资助项目

摘　　要：光锥的有效透过率不仅影响光锥与CCD的耦合效率,而且会影响到耦合器件的信噪比 本文主要从理论上讨论了影响光锥有效透过率性能的因素,从纤维光学元件的实际内部结构推导出了其实际有效填充率,从光线在光锥中的传输特征推导出了光线在光锥中传播时产生的衰减损耗。The coupling between fiber optical taper and CCD is the critical technique for the integrated taper assembly image intensified sensors. Compared to a lens-coupled CCD camera system, the CCD camera coupled with fiber optical taper has higher collection efficiency, and yields significant gains. So fiber optical taper plays an important role in the integrated devices. The coupling efficient between fiber optical taper and CCD exerts an influence on the signal-to-noise ratio of the integrated devices, but the effective transmission of taper has influence upon the coupling efficient. In this paper, the core-packing fraction of taper has been calculated precisely according to the virtual structure of fiber optical element, the attenuation and losses of the light energy transmitted through fiber taper have also been analyzed and deduced according to the ray mode transmission characteristics in the taper. Finally the effective transmission of taper was deduced, and an objective measurement of the effective transmission about taper was also built. Some ways improved the transmission characteristics of the fiber taper were put forward.

关 键 词：光锥 有效填充率 衰减损耗 有效透过率 

分 类 号：TN25[电子电信—物理电子学]