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Proceedings Paper

Multi long-period gratings in a fiber carved and written by using a CO[sub]2[/sub] laser for distributed sensing
Author(s): Yutaka Katsuyama; Yutaka Tokunaga; Saburo Kasahara; Ryou Sougen; Osanori Koyama; Makoto Yamada
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Paper Abstract

A multi long-period grating (multi-LPG) sensor has been proposed for distributed sensing. To fabricate the multi-LPG sensor, a carved LPG has also been proposed for easy fabrication of the multi-LPGs with different resonant wavelengths in a similar loss spectrum. The 2-LPG sensor was fabricated in a fiber successfully, containing carved and uncarved LPGs. The resonant wavelength shift was 64 nm by the carving. The temperature dependence of the resonant wavelength was 0.11 nm/deg, and the temperature distributed sensing was demonstrated to be possible by the 2-LPG sensor.

Paper Details

Date Published: 18 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77539I (18 May 2011); doi: 10.1117/12.886013
Show Author Affiliations
Yutaka Katsuyama, Osaka Prefecture Univ. (Japan)
Yutaka Tokunaga, Osaka Prefecture Univ. (Japan)
Saburo Kasahara, Osaka Prefecture Univ. (Japan)
Ryou Sougen, Osaka Prefecture Univ. (Japan)
Osanori Koyama, Osaka Prefecture Univ. (Japan)
Makoto Yamada, Osaka Prefecture Univ. (Japan)

Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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