Polarization-mode dispersion measurements in high-birefringence fibers by means of stimulated Raman scattering

A convenient technique for polarization-mode dispersion measurements in short lengths of high-birefringence fibers is reported. The technique is based on spectral interferometry with a frequency-doubled Nd:YAG laser, which is frequency shifted and broadened by self-stimulated Raman scattering in an optical fiber. The different Raman Stokes beams permit accurate measurements over a 40-nm wavelength range in the visible spectrum.