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Proceedings Paper

A multi-point temperature warning sensor system with different thresholds using a multi-channel reference FBG
Author(s): Xia Li; Qizhen Sun; P. Shum; Ngo Quoc Nam; Teehiang Cheng; Deming Liu
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Paper Abstract

20 ns-width pulses are modulated on a multi-wavelength fiber ring laser and transmit into two fiber Bragg grating based sensing heads with different wavelength. When the temperature exceeds the threshold at certain position, the light at corresponding time slot and wavelength will be reflected. Thus, the warning location of temperature increasing will be easily determined from OTDM (optical time division multiplexing) demodulation technique.

Paper Details

Date Published: 14 January 2008
PDF: 8 pages
Proc. SPIE 6781, Passive Components and Fiber-based Devices IV, 67812J (14 January 2008); doi: 10.1117/12.743508
Show Author Affiliations
Xia Li, Nanyang Technological Univ. (Singapore)
Qizhen Sun, Huazhong Univ. of Science and Technology (China)
P. Shum, Nanyang Technological Univ. (Singapore)
Ngo Quoc Nam, Nanyang Technological Univ. (Singapore)
Teehiang Cheng, Nanyang Technological Univ. (Singapore)
Deming Liu, Huazhong Univ. of Science and Technology (China)

Published in SPIE Proceedings Vol. 6781:
Passive Components and Fiber-based Devices IV
Ming-Jun Li; Jianping Chen; Satoki Kawanishi; Ian H. White, Editor(s)

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