Patent ID: 7003010

Claim:
A laser system comprising: An optical device comprising: a substrate layer; a waveguide layer on the substrate layer; a grating layer on the waveguide layer on the side opposite to the substrate layer; and means for varying reflection wavelengths along any direction of the waveguide layer; At least three active waveguides having first end facets and second end facets, the first end facets of the active waveguides being attached to the optical device with the first end facets being arranged in the form of matrix, the second end facets being coated with a thin-film stack, At least one light supply module which is capable of generating pumping light with its energy sufficiently high for exciting the active waveguides; the thin-film stack on the second facets being substantially transparent to the pumping light but is optically reflective to the light for output; Means for coupling laser lights from the laser system for output.