All-Optical Variable-In Variable-Out Wavelength Conversions by Using MgO:LiNbO3 Quasiphase Matched Wavelength Converters

A novel method of all-optical variable-in variable-out wavelength conversions is, for the first time, proposed and demonstrated by using MgO:LiNbO3 quasiphase matched (QPM) waveguides. It is shown that input signal in a wavelength range of 60 nm can be converted to any output signal in a wavelength range of 30 nm with almost the same efficiency (-26 dB with a pump power of -0.5 dBm) by changing device temperature and pump wavelength.