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:
Oct. 19, 2010
Filed:
Mar. 18, 2004
Alex A. Behfar, Ithaca, NY (US);
Alfred T. Schremer, Jr., Freeville, NY (US);
Cristian B. Stagarescu, Ithaca, NY (US);
Alex A. Behfar, Ithaca, NY (US);
Alfred T. Schremer, Jr., Freeville, NY (US);
Cristian B. Stagarescu, Ithaca, NY (US);
Binoptics Corporation, Ithaca, NY (US);
Abstract
Unidirectionality of lasers is enhanced by forming one or more etched gaps () in the laser cavity. The gaps may be provided in any segment of a laser, such as any leg of a ring laser, or in one leg () of a V-shaped laser (). A Brewster angle facet at the distal end of a photonic device coupled to the laser reduces back-reflection into the laser cavity. A distributed Bragg reflector is used at the output of a laser to enhance the side-mode suppression ratio of the laser.