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:
Apr. 06, 2010
Filed:
Nov. 29, 2005
Dan Birkedal, Værløse, DK;
Svend Bischoff, Fredensborg, DK;
Michael Juhl, Frederiksberg, DK;
Magnus Hald Madsen, Copenhagen N, DK;
Francis Pascal Romstad, Copenhagen Ø, DK;
Dan Birkedal, Værløse, DK;
Svend Bischoff, Fredensborg, DK;
Michael Juhl, Frederiksberg, DK;
Magnus Hald Madsen, Copenhagen N, DK;
Francis Pascal Romstad, Copenhagen Ø, DK;
Alight Photonics APS, Farum, DK;
Abstract
This specification discloses a VCSEL (Vertical-Cavity Surface-Emitting Laser) device with single-mode output and optionally single polarization output. This device is given by lateral mode confinement by the PBG (Photonic Band-Gap) effect by shallow etching in a partial VCSEL top mirror. The PBG area encircles a MS-region (Mode-Shaping region), which is characterized by large longitudinal mode losses. The MS-region encircles the LA-region (Light Aperture region), which is characterised by low longitudinal mode losses. The MS-region does not contribute to the lateral mode-confinement to the LA-aperture, and the lateral modes confined by the PBG area. The VCSEL is thus optimized for single fundamental mode operation.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile