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Temperature characterisation of long-period gratings for sensor applications

✍ Scribed by F. J. O'Flaherty; Z. Ghassemlooy; P. S. Mangat; K. P. Dowker

Publisher
John Wiley and Sons
Year
2004
Tongue
English
Weight
85 KB
Volume
42
Category
Article
ISSN
0895-2477

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✦ Synopsis

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. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 42: 402–405, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20317

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