22-km distributed temperature sensor using Brillouin gain in an optical fiber

X. Bao, David J. Webb, David A. Jackson

Research output: Contribution to journalArticlepeer-review


We describe an experimental distributed temperature sensor that uses the temperature dependence of the Brillouin frequency shift. When a 22.2-km sensing length is used, we have observed a temperature resolution of 1°C and have obtained a spatial resolution of 10 m.
Original languageEnglish
Pages (from-to)552-554
Number of pages3
JournalOptics Letters
Issue number7
Publication statusPublished - 1 Apr 1993

Bibliographical note

© 1993 The Optical Society. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-18-7-552. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.


  • experimental distributed temperature sensor
  • temperature dependence
  • Brillouin frequency shift


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