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Proceedings Paper

Sensitivity-enhanced optical temperature sensor with cascaded LPFGs
Author(s): Yasuhiro Tsutsumi; Yuji Miyoshi; Masaharu Ohashi
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Paper Abstract

We propose a new structure of optical fiber temperature sensor with cascaded long-period fiber gratings (LPFGs) and investigate the temperature dependent loss of cascaded LFPGs. Each of the cascaded LPFGs has the same resonance wavelength with the same temperature change, because the cascaded LPFGs are made of a heat-shrinkable tube and a screw. The total resonance loss of proposed cascaded LPFGs shows higher temperature sensitivity than that of a single LPFG. The thermal coefficient of 4-cascaded LPFG also shows more than 4 times larger than that of a single one.

Paper Details

Date Published: 29 November 2011
PDF: 6 pages
Proc. SPIE 8307, Passive Components and Fiber-Based Devices VIII, 83070U (29 November 2011); doi: 10.1117/12.904304
Show Author Affiliations
Yasuhiro Tsutsumi, Osaka Prefecture Univ. (Japan)
Yuji Miyoshi, Osaka Prefecture Univ. (Japan)
Masaharu Ohashi, Osaka Prefecture Univ. (Japan)

Published in SPIE Proceedings Vol. 8307:
Passive Components and Fiber-Based Devices VIII
Bishnu P. Pal, Editor(s)

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