Patent ID: 6434294
Filing Date: 2002-08-13
Classification: G02B,H01S,H03B

Abstract:
A photonic local oscillator signal generator comprising:a substrate; a plurality of optical channel waveguides fabricated in the substrate; a pan-chromatic mirror attached to the substrate delimiting a first end of a laser cavity of each of the plurality of waveguides; and a Bragg grating mirror delimiting a second end of the laser cavity of each of the plurality of waveguides, the grating mirror including a plurality of grating fringes, the spacing between the grating fringes being different for each of the plurality of waveguides; wherein the plurality of waveguides are fabricated such that in operation of the signal generator an evanescent tail of an optical mode field created by laser light generation in each of the plurality of laser cavities overlaps with an evanescent tail of an optical mode field created by laser light generation in an adjacent laser cavity.