From Stokes measurements to PDF post-processing

We present a robust post-processing technique to extract the polarization dependant frequency (PDF) and Polarization dependant loss (PDL) from stokes measurements of differential phase shift keying (DPSK) demodulators. The proposed method is based on sine-fitting on transmissions. It evaluates PDF and PDL from fitting parameters (phase, amplitude and amplitude offset) through a Muller matrix analysis.