20-km distributed temperature sensor based on spontaneous Brillouin scattering

V. Lecoeuche, M.W. Hathaway, David J. Webb, C.N. Pannell, David A. Jackson

Research output: Contribution to journalArticle

Abstract

We report on a novel experimental setup for distributed measurement of temperature, based on spontaneous Brillouin scattering in optical fiber. We have developed a mode-locked Brillouin fiber ring laser in order to generate the dual frequency source required for a heterodyne detection of the backscattered signal. This relatively simple system enables temperature measurements over 20 km with a spatial resolution of 7 m.
Original languageEnglish
Pages (from-to)1367-1369
Number of pages3
JournalIEEE Photonics Technology Letters
Volume12
Issue number10
DOIs
Publication statusPublished - Oct 2000

Keywords

  • Brillouin scattering
  • fiber lasers
  • frequency
  • laser mode locking
  • optical fiber sensors
  • optical fibers
  • ring lasers
  • signal generators
  • temperature sensors
  • acousto-optical modulation
  • distributed sensors
  • fibre lasers
  • fibre optic sensors
  • heterodyne detection
  • optical fibre testing
  • stimulated Brillouin scattering
  • 20 km
  • backscattered signal
  • distributed temperature measurement
  • distributed temperature sensor
  • dual frequency source
  • mode-locked Brillouin fiber ring laser
  • optical fiber testing
  • spatial resolution
  • spontaneous Brillouin scattering
  • temperature measurements

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