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Proceedings Paper

Application of optical sensing technology to the civil engineering field with optical fiber strain measurement device (BOTDR)
Author(s): Koji Komatsu; Kazuhiko Fujihashi; Masaru Okutsu
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Paper Abstract

Nippon Telegraph and Telephone Corporation (NTT) has developed a device (BOTDR) for measuring the strain occurring in optical fibers as a means of monitoring the condition of optical fiber telecommunications cables. The authors are promoting development of a system that uses this device to measure and monitor structural and ground deformation. This paper first introduces the measurement principle of the strain measurement method using optical fibers (BOTDR method). It then presents case studies of application to the deformation of telecommunications tunnels, ground subject to landslides and so on, and also an outline of an automatic measuring system.

Paper Details

Date Published: 9 September 2002
PDF: 10 pages
Proc. SPIE 4920, Advanced Sensor Systems and Applications, (9 September 2002); doi: 10.1117/12.481994
Show Author Affiliations
Koji Komatsu, Nippon Telegraph and Telephone Corp. (Japan)
Kazuhiko Fujihashi, Nippon Telegraph and Telephone Corp. (Japan)
Masaru Okutsu, Nippon Telegraph and Telephone Corp. (Japan)

Published in SPIE Proceedings Vol. 4920:
Advanced Sensor Systems and Applications
Yun-Jiang Rao; Julian D. C. Jones; Hiroshi Naruse; Robert I. Chen, Editor(s)

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