Patent ID: 6728290
Filing Date: 2004-04-27
Classification: H01S

Abstract:
A semiconductor laser, the laser comprising:a laser heterostructure having an active layer, a lateral waveguide terminating in an output aperture, and a gain section; and a rear surface distributed Bragg grating on a surface of said laser heterostructure; a first tuning electrode formed on said rear surface distributed Bragg grating; a front surface distributed Bragg grating on a surface of said laser heterostucture and closer to said output aperture than said rear surface distributed Bragg grating, the gain section being between said front surface distributed Bragg grating and said output aperture; a second tuning electrode formed on said front surface distributed Bragg grating; a space between said rear surface distributed Bragg grating and said front surface distributed Bragg grating; a first current drive electrode formed on said gain section; a second current drive electrode formed on said space.