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Proceedings Paper

Temperature-stabilized fiber Bragg grating underwater acoustic sensor array using incoherent light
Author(s): Satoshi Tanaka; Hiroki Yokosuka; Nobuaki Takahashi
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Paper Abstract

A reflective-type fiber Bragg grating (FBG) sensor based on intensity modulation technique has been developed to construct an FBG underwater acoustic sensor array, which consists of a amplified spontaneous emission (ASE) source, a four-port optical circulator and a pair of FBGs: one is used for sensing component, and the other is used to provide a narrowband light source from the incoherent ASE source. The paired FBG configuration enables us to eliminate temperature effects on the acoustic detection. In addition, the reflective-type sensor uses a single lead-in/out fiber so that it is convenient to arrange a multiplexed sensor array. In the experiment, the FBG underwater acoustic sensor with two sensing elements is fabricated and thermally stabilized time-division multiplexed detection is demonstrated.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.623418
Show Author Affiliations
Satoshi Tanaka, National Defense Academy (Japan)
Hiroki Yokosuka, National Defense Academy (Japan)
Nobuaki Takahashi, National Defense Academy (Japan)


Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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