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High frequency acoustic detector based on fiber Fabry-Perot interferometer

Park, H.S. and Thursby, G.J. and Culshaw, B. (2004) High frequency acoustic detector based on fiber Fabry-Perot interferometer. In: 2nd European Workshop on Optical Fibre Sensors, 2004-06-09 - 2004-06-11.

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Abstract

We describe a novel optical acoustic detector based on a bias-controlled fiber Fabry-Perot interferometer. Broad bandwidth as 15 MHz similar to a few GHz and higher sensitivity than that of conventional systems were demonstrated. The minimum detectable phase was 4x10(-8) rad/Hz(1/2), which was 3 times larger than the quantum-limited value.