Strain-Temperature Discrimination Using a Single Fiber Bragg Grating

Aashia, R and Madhav, KV and Srinivasan, B and Asokan, S (2010) Strain-Temperature Discrimination Using a Single Fiber Bragg Grating. In: IEEE Photonics Technology Letters, 22 (11). pp. 778-780.

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Abstract

The out-diffusion of germanium from the core of a photosensitive fiber under elevated temperature is exploited to form a Fabry-Perot filter within a single fiber Bragg grating, by subjecting the diffused region to a single exposure using the standard phase-mask technique. A key aspect of our work is the measurement of the out-diffusion through energy dispersive X-ray analysis. Furthermore, we demonstrate the use of the above single-grating filter for discrimination and simultaneous measurement of strain and temperature. The proposed technique provides a significant advantage over other existing methods that require at least two gratings.

Item Type:	Journal Article
Publication:	IEEE Photonics Technology Letters
Publisher:	IEEE
Additional Information:	Copyright 2010 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords:	Fabry-Perot;fiber Bragg grating (FBG);strain-temperature discrimination;thermal out-diffusion
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	25 May 2010 05:28
Last Modified:	29 Feb 2012 04:45
URI:	http://eprints.iisc.ac.in/id/eprint/28026

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