Application of continuous wavelet transform for determination of fiber birefringence

Measurements of the group-birefringence dispersion of a microstructured optical fiber using the wavelength-scanning technique are reported. Resulting interferograms are processed using the continuous wavelet transform. We discuss application of this approach for determination of birefringence of few-mode fibers and show that with careful analysis it is possible to determine birefringence dispersion of the higher-order modes in optical fibers.