WAVELENGTH CONVERSION BY DIFFERENCE-FREQUENCY-GENERATION IN ALGAAS WAVE-GUIDES WITH PERIODIC DOMAIN INVERSION ACHIEVED BY WAFER BONDING

Wavelength conversion by difference-frequency generation is achieved i n a periodically domain reversed AlGaAs waveguide. The AlGaAs waveguid e is epitaxially grown on a template substrate where a periodic crysta l domain inversion is achieved using wafer bonding, selective etching, and organometallic chemical vapor deposition. Wavelength conversion e xperiments on a fabricated buried heterowaveguide showed a 90 nm conve rsion bandwidth, polarization diversified operation, and polarization independent conversion efficiency. The experimental results also showe d linearity and spectral inversion, which imply transparency to signal formats including analog and frequency modulation. Simultaneous conve rsion of multiple input wavelengths with no measurable cross talk is a lso demonstrated. (C) 1996 American Institute of Physics.