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Proceedings Paper

A passive way to extend DTSS system distance
Author(s): Yandong Gong; Jianzhong Hao; Michael Ong Ling Chuen; Varghese Paulose
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Paper Abstract

Brillouin or Raman-based Distributed Temperature and Strain Sensor (DTSS) provide a chance to distributed measure the temperature and strain over tens of kilometer with higher resolution. Lots of efforts, for example, Raman amplifier, Signal processing methods et al, have been used to extend their sensing distance and increase their sensitivity and signal noise ratio. A sensing fiber, which has a gradually increasing Brillouin gain-coefficient gB/Aeff or Raman gain coefficient gR/Aeff along its length and which can keep the received Brillouin or Raman Stoke's power constant in a Brillouin or Raman DTSS, is proposed in this paper. This novel fiber and practical fiber link with such nonlinear coefficient profile can further double or triple extend the sensing distance of the distributed Brillouin or Raman Fiber-optic Sensor system.

Paper Details

Date Published: 16 May 2008
PDF: 4 pages
Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70040M (16 May 2008); doi: 10.1117/12.782608
Show Author Affiliations
Yandong Gong, Institute for Infocomm Research (Singapore)
Jianzhong Hao, Institute for Infocomm Research (Singapore)
Michael Ong Ling Chuen, Institute for Infocomm Research (Singapore)
Varghese Paulose, Institute for Infocomm Research (Singapore)

Published in SPIE Proceedings Vol. 7004:
19th International Conference on Optical Fibre Sensors
David Sampson; Stephen Collins; Kyunghwan Oh; Ryozo Yamauchi, Editor(s)

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