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:
Dec. 04, 1990
Filed:
Nov. 30, 1989
Applicant:
Inventors:
Sel B Colak, Ossining, NY (US);
Richard A Stolzenberger, Mahwah, NJ (US);
John J Zola, Ramsey, NJ (US);
Assignee:
North American Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; H03F / ;
U.S. Cl.
CPC ...
350 9612 ; 350 9611 ; 350 9615 ; 350 9630 ; 307425 ; 307427 ; 307430 ;
Abstract
An active waveguide device is provided for doubling the frequency of an applied light wave. The device includes first and second optical waveguides which are coupled through a separating gap. The coupling can be precisely adjusted to maximize the doubling efficiency by adjusting the gap dimension. The device is particularly suitable for producing higher frequency blue radiation from lower frequency infrared radiation which is readily produced by semiconductor lasers.