Orthogonal phase quadratures conversion to different wavelengths through phase-sensitive four wave mixing in an highly nonlinear fiber

Phase-sensitive processes exploiting FWM in an HNLF allow simultaneously converting two orthogonal quadratures of an optical signal to different wavelengths. Conversion efficiencies to two 90°-phase-shifted idlers exceeding 10 dB of phase-sensitive extinction ratio are obtained experimentally.