Novel frequency-agile interrogating system for fibre Bragg grating sensors


Xu, Ming Gang, Geiger, Harald, Archambault, Jean-Luc, Reekie, Laurence and Dakin, John P. (1993) Novel frequency-agile interrogating system for fibre Bragg grating sensors. In, Kersey, Alan D. and Dakin, John P. (eds.) Distributed and Multiplexed Fiber Optic Sensors III. Distributed and Multiplexed Fiber Optic Sensors III Bellingham, US, The International Society for Optical Engineering, 59-65. (Proceedings of SPIE, 2071). (doi:10.1117/12.165920).

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Description/Abstract

We have demonstrated a new frequency-agile system for the interrogation of in-fibre Bragg grating sensors. The scheme involves frequency shift keying (FSK) of the RF drive to an acousto-optic tunable filter (AOTF) to track the wavelength shifts of a Bragg grating. Theoretical studies to derive the optimum frequency deviation for achieving maximum sensitivity are given, and experimental results are presented for temperature measurement. This technique is capable of rapid, random access and very wide tuning range, showing the potential for interrogating multiplexed arrays of Bragg-grating-based sensors

Item Type: Book Section
ISBNs: 9780819413369
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: University Structure - Pre August 2011 > Optoelectronics Research Centre
Faculty of Physical Sciences and Engineering > Optoelectronics Research Centre
ePrint ID: 77225
Date Deposited: 11 Mar 2010
Last Modified: 27 Mar 2014 18:56
Publisher: The International Society for Optical Engineering
URI: http://eprints.soton.ac.uk/id/eprint/77225

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