Field demonstration of an eight-element fiber laser hydrophone array

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

doi:10.1117/12.2058064

2 June 2014 Field demonstration of an eight-element fiber laser hydrophone array

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

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91570H (2014) https://doi.org/10.1117/12.2058064
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We have developed an 8-element fibre laser seabed array demonstrating state-of-the art performance characteristics for a fibre laser sensing system and highlighting the advantage this technology provides in the underwater sensing domain. 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.

Citation Download Citation

Scott Foster, Alexei Tikhomirov, Joanne Harrison, and John van Velzen "Field demonstration of an eight-element fiber laser hydrophone array", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91570H (2 June 2014); https://doi.org/10.1117/12.2058064

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