Temperature-stabilized fiber Bragg grating underwater acoustic sensor array using incoherent light

Satoshi Tanaka; Hiroki Yokosuka; Nobuaki Takahashi

doi:10.1117/12.623418

23 May 2005 Temperature-stabilized fiber Bragg grating underwater acoustic sensor array using incoherent light

Satoshi Tanaka, Hiroki Yokosuka, Nobuaki Takahashi

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.623418
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

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.

Citation Download Citation

Satoshi Tanaka, Hiroki Yokosuka, and Nobuaki Takahashi "Temperature-stabilized fiber Bragg grating underwater acoustic sensor array using incoherent light", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.623418

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