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:
Aug. 28, 1990
Filed:
Oct. 27, 1988
Applicant:
Inventors:
Gary A Evans, West Windsor Township, Mercer County, NJ (US);
Nils W Carlson, Lawrenceville, NJ (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ; H01L / ; H01S / ;
U.S. Cl.
CPC ...
350 9619 ; 350 9611 ; 350 9612 ; 357 17 ; 372 36 ; 372 49 ; 372 96 ; 372102 ;
Abstract
A superluminescent diode has one end coupled to a DBR having a grating and the other end has a reflective coating. A broadlight spectrum is emitted for reduced speckle interference and phase noise when used in applications such as a gyroscope. The diode can be of the 'P side down' type for good heat dissipation during continuous wave operation. Two gratings can be used in order to reduce beam divergence.