Field test of the flow noise of fiber laser hydrophone array

Fiber laser hydrophone has attracted more and more attention because of its potential application in novel sonar system. For a towed fiber optic hydrophone array, the flow noise is an important source of the system noise. This paper presents the field test result of the flow noise of an eight-element fiber laser hydrophone array. The structure of the fiber laser hydrophone and the array is also introduced. The field test shows that obvious flow noise can be measured when the array is towed at the speed of 3 kn.

[1]  Scott Foster,et al.  Field demonstration of a DFB fibre laser hydrophone seabed array in Jervis Bay, Australia , 2009, International Conference on Optical Fibre Sensors.

[2]  G. Edvell,et al.  A 16 channel fibre laser sensor array , 2006, ACOFT/AOS 2006 - Australian Conference on Optical Fibre Technology/Australian Optical Society.

[3]  David J. Hill,et al.  DFB fibre-laser sensor developments , 2005, International Conference on Optical Fibre Sensors.

[4]  S. Ko,et al.  Performance of various shapes of hydrophones in the reduction of turbulent flow noise , 1993 .

[5]  Fang Li,et al.  Field test of an eight-element fiber laser hydrophone array , 2012, Other Conferences.

[6]  Ian Bennion,et al.  Progress toward an ultrathin optical hydrophone array , 1998, Optical Fibre Sensors.

[7]  Cosimo Trono,et al.  Erbium-doped fiber lasers as deep-sea hydrophones , 2006 .

[8]  Fang Li,et al.  Fiber Laser Hydrophone Based on Double Diaphragms: Theory and Experiment , 2008, Journal of Lightwave Technology.

[9]  Andrew Knight.  Flow noise calculations for extended hydrophones in fluid‐ and solid‐filled towed arrays , 1996 .