Patent ID: 9534965
Date: 2017-01-03
CPC Classifications: G01B,G01D,G01K,G01L,G01N

Claim:
1. A cable for distributed fibre optic sensing comprising: a flexible tape; an optical fibre suitable for Brillouin scattering measurement forming at least two lengths, and at least one free end of at least one length being connectable to a reading unit; wherein at least a section of the longitudinal length of the flexible tape is situated between at least a section of the two lengths such that the two lengths are in close proximity such that a temperature gradient between the two lengths is minimized; wherein the section of the two lengths is not located on the neutral axis of the flexible tape; and wherein the section of the tape and the section of lengths can flex together, such that distributed temperature and strain in each of the lengths of fiber is detected by the reading unit from the Brillouin scattering measurements, whereby deformation of the tape is determined by subtracting the two temperature and strain measurements.