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Proceedings Paper

The use of BOTDR to evaluate the thermal effects on fiber residual strain of optical fiber cables
Author(s): Yuangang Lu; Cunlei Li; Liang Wang; Xuping Zhang
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Paper Abstract

The residual axial strain induced in the cabled fiber is a vital factor to evaluate the reliability of optical fiber cables. However, little is known about the thermal effect on the fiber residual strain, especially on the particular short section of the fiber. In order to precisely determine the thermal effects on fiber residual strain of optical cables, a measurement method based on Brillouin Optical Time-Domain Reflectometry (BOTDR) system is proposed. Thermal characteristics of fiber residual strain of optical fiber cables are investigated theoretically and experimentally. Measurements of the residual strain in particular short section of fiber are made with the distributed fiber sensing system based on BOTDR. Experimental results for a double-coated fiber in loose structure cable are in good agreement with those predicted from the theory. It has been found that the fiber residual strain increases linearly with the decrease of the temperature in the range from 50°C to -50°C.

Paper Details

Date Published: 26 November 2007
PDF: 6 pages
Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 68300I (26 November 2007); doi: 10.1117/12.755807
Show Author Affiliations
Yuangang Lu, Nanjing Univ. (China)
Cunlei Li, Nanjing Univ. (China)
Liang Wang, Nanjing Univ. (China)
Xuping Zhang, Nanjing Univ. (China)

Published in SPIE Proceedings Vol. 6830:
Advanced Sensor Systems and Applications III
Yun-Jiang Rao; Yanbiao Liao; Gang-Ding Peng, Editor(s)

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