The use of BOTDR to evaluate the thermal effects on fiber residual strain of optical fiber cables

Yuangang Lu; Cunlei Li; Liang Wang; Xuping Zhang

doi:10.1117/12.755807

26 November 2007 The use of BOTDR to evaluate the thermal effects on fiber residual strain of optical fiber cables

Yuangang Lu, Cunlei Li, Liang Wang, Xuping Zhang

Proceedings Volume 6830, Advanced Sensor Systems and Applications III; 68300I (2007) https://doi.org/10.1117/12.755807
Event: Photonics Asia 2007, 2007, Beijing, China

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.

Citation Download Citation

Yuangang Lu, Cunlei Li, Liang Wang, and Xuping Zhang "The use of BOTDR to evaluate the thermal effects on fiber residual strain of optical fiber cables", Proc. SPIE 6830, Advanced Sensor Systems and Applications III, 68300I (26 November 2007); https://doi.org/10.1117/12.755807

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KEYWORDS

Optical fiber cables

Thermal effects

Temperature metrology

Coating

Loose tube cables

Structured optical fibers

Optical testing

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