Title :
Photo-elastic correction factor for fiber strain measurements in a cable under tensile load
Author :
Abe, K. ; Yoshida, K. ; Daneshvar, O. ; Carr, J.J.
Author_Institution :
i/FO Technol., Ont., Canada
fDate :
1/1/1995 12:00:00 AM
Abstract :
There has been a large variation among reported values for photo-elastic correction factor (K). The nonlinearity of group index versus strain plot was demonstrated to be the cause of the inconsistency. Based on this finding, it is concluded that the K value should be in the range of 1.26-1.30 when the fiber strain is less than 0.6% and 1.22-1.24 when the strain is in the range of 2-3% regardless of fiber types and measurement wavelengths. As a practical example of strain measurements, a test result for an OPGW was described
Keywords :
nonlinear optics; optical cables; optical fibre testing; photoelasticity; refractive index; strain measurement; K value; cable; fiber strain; fiber strain measurements; fiber types; group index; measurement wavelengths; nonlinearity; photo-elastic correction factor; strain measurements; tensile load; Calibration; Capacitive sensors; Delay effects; Optical fiber cables; Optical fiber testing; Optical modulation; Optical refraction; Strain measurement; Tensile strain; Wavelength measurement;
Journal_Title :
Lightwave Technology, Journal of
