带空气腔芯轴型光纤水听器特性研究

对带空气腔芯轴型光纤水听器进行了研究和试验验证.分别建立了二维和三维模型对水听器性能进行分析，给出了两种模型下的水听器相移灵敏度计算公式；小批量制作了22个该结构的水听器并进行了测试.试验数据与模型计算结果十分吻合.结果表明,三维模型计算结果比二维模型更为准确，频带内均方根偏差大部分都小于0.3(dB·re·rad)/μPa.试验采用的水听器相移灵敏度为－153(dB·re·rad)/μPa，其归一化相移灵敏度达到－308(dB·re·1)/μPa.同时，该模型可以更好地根据实际需要来设计不同尺寸和性能的水听器结构.

A Fiber-Optic Air-Backed Mandrel Hydrophone

An optical-fiber air-backed mandrel hydrophone was proposed and investigated both analytically and experimentally.The two-dimensional and three-dimensional quazistatically theoretical models of the hydrophone were created and compared,and the phase sensitivity of the hydrophone was analyzed.Twenty-two hydrophones of this type according to the model presented were constructed and tested.The experiment results show that the estimation of theoretical models are correct,and estimation accuracy of three-dimensio...