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First measurement of strain distribution along field-installed optical fibers using Brillouin spectroscopy

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4 Author(s)
Tateda, M. ; NTT Transmission Syst. Lab., Ibaraki, Japan ; Horiguchi, T. ; Kurashima, T. ; Ishihara, K.

Strain distributions along optical fibers in a 1.3-km-long cable before and after installation are measured using Brillouin optical-fiber time domain analysis. The residual strains in the installed optical fibers were found to vary from zero to 0.07%, depending on the conduit configuration and installation procedure. Strain distribution measurements were carried out on a 24-fiber slotted-core type single-mode optical fiber cable for 1.55-μm-wavelength transmission, whose length, outer diameter, and weight were 1.3 km, 14 mm, and 0.18 kg/m, respectively. No clear relation between strain distributions and the fiber configuration in the test cable are found

Published in:

Lightwave Technology, Journal of  (Volume:8 ,  Issue: 9 )