Title :
Towards a High Performance Fiber Laser Hydrophone
Author :
Foster, Scott ; Tikhomirov, Alexei ; Van Velzen, John
Author_Institution :
Maritime Oper. Div., Defence Sci. & Technol. Organ., Edinburgh, SA, Australia
fDate :
5/1/2011 12:00:00 AM
Abstract :
The operating principle and theory of a fiber laser bender hydrophone is presented. We report experimental results for a micro-engineered silicon fiber laser hydrophone. The hydrophone has a flat pressure responsivity of 107 dB re Hz/Pa over a bandwidth exceeding 5 kHz, corresponding to ocean noise limited acoustic sensitivity. The first structural resonance of the hydrophone is 9 kHz in water and the acceleration rejection is in excess of 0 dB re ms-2/Pa up to 5 kHz.
Keywords :
fibre lasers; hydrophones; acceleration rejection; fiber laser hydrophone; flat pressure responsivity; frequency 5 kHz; frequency 9 kHz; high performance; ocean noise limited acoustic sensitivity; operating principle; Acceleration; Laser beams; Noise; Optical sensors; Sensitivity; Sonar equipment; Strain; Acoustic sensors; distributed feedback devices; lasers; optical fiber devices;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2011.2123869
