Multiple-channel wavelength conversion by use of engineered quasi-phase-matching structures in LiNbO3 waveguides

We report difference frequency generation-based wavelength converters with multiple phase-matching wavelengths that use engineered quasi-phase-matchin g structures in LiNbO3 waveguides. Multiple-channel wavelength conversion i s demonstrated within the 1.5-mu m band and between the 1.3- and 1.5-mu m b ands. With simultaneous use of M pump wavelengths, these devices can also b e used to perform wavelength broadcasting, in which each of N input signals is converted into M output wavelengths. (C) 1999 Optical. Society of Ameri ca.