Brillouin optical-fiber time domain reflectometry

Toshio Kurashima, Tsuneo Horiguchi, Hisashi Izumita, Shin ichi Furukawa, Yahei Koyamada

研究成果: Article査読

317 被引用数 (Scopus)

抄録

We report on Brillouin optical-fiber time domain reflectometry (BOTDR) for distributed temperature or strain measurement along a single-mode optical fiber. BOTDR uses Brillouin scattering in optical fibers, whose Brillouin frequency shift increases in proportion to temperature or strain induced in the fiber. This method requires access to only one end of a fiber, as with conventional optical time domain reflectometry (OTDR) which uses Rayleigh scattering in optical fibers. In BOTDR, a coherent optical detection method is used as a backscattered light detection technique. This technique can achieve both high sensitivity and high frequency resolution and easily separate a weak Brillouin line from a strong Rayleigh scattering peak and Fresnel reflected light. Experimental results show the potential for measuring temperature and strain distribution with respective accuracies of ±3 °C or ±0.006%, and a spatial resolution of 100 m in an 11.57 km long fiber.

本文言語English
ページ(範囲)382-390
ページ数9
ジャーナルIEICE Transactions on Communications
E76-B
4
出版ステータスPublished - 1993 4 1

ASJC Scopus subject areas

  • ソフトウェア
  • コンピュータ ネットワークおよび通信
  • 電子工学および電気工学

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