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Modelling and performance analysis of a fibre-grating interrogation system using an acousto-optic tunable filter

Record type: Article

The performance of a fiber grating interrogation system using an acousto-optic tunable filter (AOTF) is analyzed. An equivalent linear circuit is presented to describe the system, which tracks the wavelength of a fiber Bragg grating (FBG) sensor in a FBG sensor array. From the model, the tracking resolution of a shot-noise-limited system has been determined for both transmissive and reflective interrogation of FBG's. An optimum ratio between the bandwidths of the FBG and the AOTF has been derived. Experimental results of a tracking system are presented to validate the theoretical predictions. The theory should also be suitable for interrogation systems using other forms of tunable bandpass filters for tracking the FBG wavelength.

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Citation

Xu, M.G., Geiger, H. and Dakin, J.P. (1996) Modelling and performance analysis of a fibre-grating interrogation system using an acousto-optic tunable filter Journal of Lightwave Technology, 14, (3), pp. 391-396. (doi:10.1109/50.485598).

More information

Published date: 1996
Organisations: Optoelectronics Research Centre

Identifiers

Local EPrints ID: 78177
URI: http://eprints.soton.ac.uk/id/eprint/78177
ISSN: 0733-8724
PURE UUID: c8dea3c8-b21b-4a33-b276-67c8c9d904c0

Catalogue record

Date deposited: 11 Mar 2010
Last modified: 18 Jul 2017 23:26

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Contributors

Author: M.G. Xu
Author: H. Geiger
Author: J.P. Dakin

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