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The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

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Time division multiplexing of fiber Bragg grating sensors using a mode-locked fiber laser source

Cranch, Geoffrey A. and Flockhart, Gordon M. H. and Kirkendall, Clay K. (2005) Time division multiplexing of fiber Bragg grating sensors using a mode-locked fiber laser source. In: 17th International Conference on Optical Fibre Sensors, Pts 1 and 2. Proceedings of the Society of Photo-Optical Instrumentation Engineers (SPIE) . SPIE, New York, pp. 238-241. ISBN 0819458554

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Abstract

An efficient multiplexing method for fiber Bragg grating sensors based on a broadband mode-locked laser source and interferometric interrogation is described. The system has the capability to interrogate several hundred fiber Bragg grating sensors on a single fiber, whilst achieving sub-microstrain resolution over bandwidths greater than 100 kHz. A demonstration system with 8 sensors is presented, which achieves strain resolutions less than 213 n epsilon/Hz(1/2) up to 100 Hz.