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Proceedings Paper

Highly sensitive long-period fiber grating temperature sensor
Author(s): Shun-Yee Liu; Hwa-Yaw Tam; M. Suleyman Demokan
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Paper Abstract

A novel technique to increase the temperature sensitivity of LPGs by exploiting the relatively large thermal coefficient of index-matching fluid to induce a large spectral shift of the LPG is reported in this paper. It is shown that the wavelength shift with temperature for such a LPG sensor can be as much as 1,500 times larger than that of sensors made of fiber Bragg gratings. A LPG-based temperature sensor with a resolution of about 0.03 degree(s)C is reported.

Paper Details

Date Published: 29 October 2001
PDF: 5 pages
Proc. SPIE 4595, Photonic Systems and Applications, (29 October 2001); doi: 10.1117/12.446627
Show Author Affiliations
Shun-Yee Liu, Hong Kong Polytechnic Univ. (China)
Hwa-Yaw Tam, Hong Kong Polytechnic Univ. (China)
M. Suleyman Demokan, Hong Kong Polytechnic Univ. (Hong Kong)


Published in SPIE Proceedings Vol. 4595:
Photonic Systems and Applications

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