Patent ID: 6798799
Filing Date: 2004-09-28
Classification: H01S

Abstract:
An integrated optical signal source comprising:a semiconductor laser having an etched portion with an output end that is configured with a slanted, reflecting surface for receiving an incident light beam radiated by said semiconductor laser, for partially passing the incident light beam as a first light beam, and for partially reflecting the incident light beam as a second light beam; a multiple microcavity arranged apart from said etched portion and so that the first light beam is incident upon said multiple microcavity; a first optical detector disposed to detect said first light beam after said first light beam has passed through said multiple microcavity; a second optical detector arranged at said output end of said etched portion for detecting the second light beam reflected by said slanted, reflecting surface; and a temperature controller in communicative connection with the first and second optical detectors for adjusting, based on a difference in respective light intensities of the first and second light beams, a temperature of said semiconductor laser in maintaining a constant optical wavelength.