Acoustic antenna based on Fiber Laser Hydrophones

摘要

For underwater surveillance applications, an all-optical acoustic array technology allows enhanced capabilities compared to conventional piezoelectric antenna in terms of compactness, robustness and large distance remote interrogation through small diameter optical cable. One major issue about this kind of antenna is the design of a compact sensitive optical hydrophone which is optimized for reduced temperature sensitivity and high static pressure capability. This paper presents the results obtained on a first full optical antenna panel based on an innovative wideband fiber laser hydrophone. The presented mock-up includes 12 fiber laser optical hydrophones interrogated through a 12 km lead optical cable.