Title:
Group publication title:
Creator:
Ding, Yong ; Shi, Bin ; Bao, Xiaoyi ; Gao, Junqi
Contributor:
Gaj, Miron. Redakcja ; Wilk, Ireneusz. Redakcja
Subject and Keywords:
optyka ; fiber optics sensors ; Brillouin scattering ; strain monitoring ; jacket effect
Description:
Optica Applicata, Vol. 36, 2006, nr 1, s. 57-76
Abstrakt:
Fiber jacket has a function of protecting fibers from harsh environment; it also has an impact on the measured strain accuracy. In this paper, we report on our study of jacket effect to distributed Brillouin sensor system on strain measurement accuracy for constant load stretching and constant length stretching using the 900 mm tight-buffered fiber (Type-A) and the 250 mm optical fiber (Type-B). We have studied the time-varying performance under the stretching of constant load and length. It was found that, within 48 hours under constant load stretching, the strain value of the Type-A measured by BOTDR (Brillouin optical time-domain reflectometer) increased with time, while the Type-B it kept stable. Within 48 hours under constant length stretching, the strain value of the Type-A decreased with time, while the Type-B it kept stable. After relaxation, the strain value of the Type-B reached zero within 1 hour, while the Type-A declined gradually. We found the creep deformation and stress relaxation of jacket to be the leading cause to this phenomena.
Publisher:
Oficyna Wydawnicza Politechniki Wrocławskiej
Place of publication:
Date:
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Source:
<sygn. PWr A3481II> ; click here to follow the link ; click here to follow the link
Language:
Relation:
Optica Applicata ; Optica Applicata, Vol. 36, 2006 ; Optica Applicata, Vol. 36, 2006, nr 1 ; Politechnika Wrocławska. Wydział Podstawowych Problemów Techniki
Rights:
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