阐述了压差式光纤矢量水听器的基本原理, 分析了基元灵敏度及间距对其声压灵敏度的影响, 进行了三维压差式光纤矢量水听器探头结构设计, 研制了二维压差式光纤矢量水听器样品, 并进行了性能指标测试。测试结果表明, 在20~1000Hz频段内, 压差式光纤矢量水听器的声压灵敏度与理论计算结果基本吻合, 在500Hz具有良好的指向性。

The basic principles of the gradient fiber optic vector hydrophone are elaborated, and the effects of component sensitivity and distance impact on the acoustic pressure sensitivity are analyzed. The structure design of the 3D gradient fiber vector hydrophone is completed. Samples of two-dimensional gradient fiber optic vector hydrophones were manufactured and technically tested. Test results indicate, in the frequency range of 20~1000Hz, the acoustic pressure sensitivity of the gradient fiber vector hydrophone is basically consistent with the theoretical value, and its presents good directivity at 500Hz.