T. Martynkien et al., Spectral dependence of sensitivity of highly birefringent fibers to temperature, elongation and hydrostatic pressure, OPTIK, 111(3), 2000, pp. 97-102
Interferometric measurement method was presented which allows for determini
ng spectral dependence of sensitivity of modal birefringence in highly bire
fringent fibers to temperature, elongation and hydrostatic pressure. Modal
birefringence was also measured versus wavelength for investigated fibers.
Measurements were carried out for two elliptical core fibers and one fiber
with stress induced birefringence in the spectral range from 630 nm to 840
nm. Strong wavelength dependence of modal birefringence and its sensitivity
to external parameters was detected in elliptical core fibers. In the fibe
r with stress-induced birefringence wavelength dependence of all fiber char
acteristics was much lower.