Temperature characterisation of long period gratings for sensor applications

O'FLAHERTY, F. J., GHASSEMLOOY, Z., MANGAT, P. S. and DOWKER, K. (2004). Temperature characterisation of long period gratings for sensor applications. Microwaves and optical technology letters, 42 (5), 402-405.

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Abstract

Long-period gratings, which display sensitivity to ambient temperature variations, are proposed as sensors. Therefore, full temperature characterisation is essential. In this paper, the effects of temperature upon the spectral profiles of two sets of long period gratings (LPGs) of different periods are investigated. The results obtained show that the shorter-period LPGs were found to be less sensitive than the longer-period LPGS over identical temperature ranges. The coupling wavelength shifts due to temperature are also seen to be linear and in opposite directions in each set of LPGs.

Item Type:	Article
Additional Information:	© 2004 Wiley Periodicals, Inc.
Research Institute, Centre or Group:	Materials and Engineering Research Institute > Structural Materials and Integrity Research Centre > Centre for Infrastructure Management
Identification Number:	10.1002/mop.20317
Depositing User:	Ann Betterton
Date Deposited:	08 Feb 2008
Last Modified:	05 Oct 2010 15:49
URI:	http://shura.shu.ac.uk/id/eprint/661

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