The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 06, 2005
Filed:
Jul. 02, 2002
John Cameron Major, San Jose, CA (US);
Frans Kusnadi, San Jose, CA (US);
Vladimir Kupershmidt, Pleasanton, CA (US);
John Cameron Major, San Jose, CA (US);
Frans Kusnadi, San Jose, CA (US);
Vladimir Kupershmidt, Pleasanton, CA (US);
K2 Optronics, Inc., Sunnyvale, CA (US);
Abstract
An ECLD assembly includes a thermally stabilized substrate, a laser device fixedly mounted in relation to the substrate, and a waveguide with a grating region having a grating formed therein. The waveguide is positioned to receive light emitted by the laser device and is attached to a top surface of the substrate. The ECLD's output wavelength is stabilized by one or more of the following: (1) mounting the waveguide so that its outer surface is less than 60 μm, and preferably less than about 30 μm from the top surface of the substrate; (2) placing a thermal cover (e.g., a generally semi-cylindrical shell or a strip of material formed with a V-groove) in thermal contact with the substrate and overlies at least a portion of the grating region; (3) bonding the waveguide to the substrate at first, second, and third positions where the first position is proximate the laser device, the second position is proximate a first end of the grating region, and the third position is proximate a second end of the grating region.