Demonstration of an advanced fibre laser hydrophone array in Gulf St Vincent

Scott Foster; Alexei Tikhomirov; Joanne Harrison; John van Velzen

doi:10.1117/12.2206163

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28 September 2015 Demonstration of an advanced fibre laser hydrophone array in Gulf St Vincent

Scott Foster; Alexei Tikhomirov; Joanne Harrison; John van Velzen

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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96342F (2015) https://doi.org/10.1117/12.2206163
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

We have developed an 8-element fibre laser seabed array demonstrating state-of-the art performance characteristics for a fibre laser sensing system. The system employs sea-state-zero sensitivity hydrophones with a flat acoustic response over a bandwidth exceeding 5kHz and very low inertial sensitivity. The system contains no outboard electronics and few metal components making it extremely light, compact, and low complexity. The array may be deployed up to 4 km from a land or sea based platform to a depth of up to 80m. Power delivery and telemetry for all 8 sensors is achieved via a single 2mm diameter optical fibre cable weighing less than 5kg per km. We report here results of the first field trials of this system.

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Scott Foster, Alexei Tikhomirov, Joanne Harrison, and John van Velzen "Demonstration of an advanced fibre laser hydrophone array in Gulf St Vincent", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96342F (28 September 2015); https://doi.org/10.1117/12.2206163

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