A parallel multiplexed temperature sensor system using Bragg-Grating-based fiber lasers

Mandal, J., Sun, T., Grattan, K.T.V., Zheng, R.T., Ngo, N.Q. and Augousti, A.T. (2006) A parallel multiplexed temperature sensor system using Bragg-Grating-based fiber lasers. IEEE Sensors Journal, 6(4), pp. 986-995. ISSN (print) 1530-437X

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Abstract

A parallel multiplexed temperature sensor scheme using a Bragg grating-based fiber laser approach has been developed and evaluated. Multiple laser cavities were formed as the active gain media of the system using a common broadband chirped fiber Bragg grating (CFBG) and several normal FBGs, which were used as optical feedback elements, in conjunction with different lengths of erbium-doped fibers (EDFs). These gain media were externally pumped by light from a 1480-nm laser diode (LD) through a 1480-nm 1 x 4 splitter. Normal FBGs were used as the wavelength-selective and sensing elements of the laser system. Simultaneous laser action at three different wavelengths corresponding to channels 1, 3, and 4, respectively, was obtained using this scheme. The temperature was measured over the range from room temperature (27 [sup] [degrees]C) to a maximum of 540 [sup] [degrees]C, which shows the potential of the scheme for quasi-distributed sensor applications.

Item Type: Article
Uncontrolled Keywords: chirped fiber Bragg grating (CFBG), erbiumdoped fiber (EDF), fiber Bragg gratings (FBGs), fiber laser temperature sensor, multiplexed sensor interrogation.
Research Area: Physics
Faculty, School or Research Centre: Faculty of Science (until 2011) > School of Life Sciences
Faculty of Science (until 2011)
Depositing User: Katrina Clifford
Date Deposited: 28 May 2008
Last Modified: 23 Apr 2009 15:51
URI: http://eprints.kingston.ac.uk/id/eprint/3087

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