Patent ID: 6628690
Filing Date: 2003-09-30
Classification: B82Y,H01S,H04B

Abstract:
A diode laser assembly, comprising:a substrate; an epitaxial structure formed on the substrate; a tunable laser resonator formed in the epitaxial structure that produces an output, the tunable laser resonator including first and second reflectors, a gain section and a phase section, the gain section and the phase section each being positioned between the first and second reflectors, wherein the output wavelength is tunable over a wider wavelength range than is achievable by index tuning of any one section, and the wider wavelength range is represented by &Dgr;&lgr;/&lgr;>&Dgr;n/n; a modulator with at least a first section and a second section formed in the epitaxial structure outside of the tunable laser resonator, wherein separate electrical connections are provided to the first and second sections of the modulator that are configured to control an amplitude and phase response of the output from the tunable laser resonator by applying a reverse bias to change an electric field in the first and second sections of the modulator; and a coupler formed in the epitaxial structure, the coupler being positioned and configured to receive an output from the modulator, reduce back reflections to the modulator and couple the output of the modulator to a following optical assembly.