芯轴型光纤水听器灵敏度的优化设计  

Optimization Design of the Pressure Phase Sensitivity of the Fiber-Optic Air-Backed Mandrel Hydrophone

作　　者：殷锴[1,2] 周宏朴[2] 张敏[2] 丁天怀[1,3] 王立威[2] 荆振国[2] 廖延彪[2] 

机构地区：[1]清华大学精密仪器与机械学系,北京100084 [2]清华大学电子工程系光纤传感实验室,北京100084 [3]清华大学精密测试技术及仪器国家重点实验室,北京100084

出　　处：《中国激光》2008年第12期1940-1945,共6页Chinese Journal of Lasers

基　　金：国家863计划(2003AA602110-1)资助项目

摘　　要：声压相移灵敏度是光纤水听器的重要指标之一,提高灵敏度是光纤水听器设计的基本原则。应用正交设计方法对光纤水听器声压灵敏度指标进行优化设计,提出了一种带空气腔芯轴型光纤水听器的三维声压相移灵敏度理论模型,对其灵敏度特性进行了研究。根据提出的结构,制作了探头。通过试验测试,理论模型符合实际测试结果,并且通过极差分析方法得到各种因素对于光纤水听器灵敏度的影响程度,进而得到了优化设计方案。Pressure phase sensitivity is one of the most important performance indexes for the fiber-optic hydrophone. Maximizing the pressure phase sensitivity is a basic principle in the fiber-optic hydrophone design. In this work, the orthogonal experimental method was applied to optimize the design of the pressure phase sensitivity of the fiber-optic air-backed mandrel hydrophone. A general three-dimensional （3D） theoretical model was created, and nine fiber-optic hydrophones were designed and made for orthogonal experiment. Several factors which affect the sensitivity were analyzed in the experiments, and the results validate the theory. The optimized designs are also gained by the analysis of the results to maximize the pressure phase sensitivity.

关 键 词：光纤传感器 光纤水听器 声压相移灵敏度 正交设计 

分 类 号：TB565.1[交通运输工程—水声工程] TE969[理学—物理]