Patent ID: 6873631

Claim:
A opto-electronic device, comprising: a substrate formed of a semiconductor; a semiconductor laser formed on said substrate to produce a laser beam; a semiconductor optical modulator formed on said substrate to receive and modulate said laser beam from said semiconductor laser in response to an electrical modulation signal; a first waveguide formed on said substrate and coupled to receive a modulated optical signal from said optical modulator; an optical resonator formed on said substrate and coupled to said first waveguide to receive a portion of said modulated optical signal; a second waveguide formed on said substrate and coupled to receive a portion of said modulated optical signal in said optical resonator; a semiconductor photodetector formed on said substrate to receive and convert an optical output from said second waveguide into an electrical signal; and an electrical link formed on said substrate and coupled between said photodetector and said optical modulator to produce said electrical modulation signal from said electrical signal.