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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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|
|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
|Date Deposited:||11 Mar 2010|
|Last Modified:||02 Mar 2012 11:22|
|Publisher:||The International Society for Optical Engineering|
|RDF:||RDF+N-Triples, RDF+N3, RDF+XML, Browse.|
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