Polarization-Insensitive Parametric Wavelength Converter Based on Cascaded Nonlinearities in LiNbO sub 3 Waveguides

We developed a polarization-independent wavelength converter using periodically poled LiNbO sub 3 waveguides. The device uses a pump in the 1.5 micron band, has negligible polarization sensitivity and a penalty of less than 0.5 dB at 10 Gb/s.