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:
Jul. 25, 1978
Filed:
Dec. 16, 1976
Applicant:
Inventor:
Arthur Miller, Princeton Junction, NJ (US);
Assignee:
RCA Corporation, New York, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9619 ; 3501 / ;
Abstract
A pair of diffraction gratings are disposed between a fiber and a waveguide carried by a substrate. The gratings each have a common spatial frequency component that couples light between the fiber and the waveguide. Light from the gratings establish first and second components of an electromagnetic field that extend into the substrate. The gratings are constructed and positioned to cause the first and second components to be of substantially equal amplitude and opposite phase thereby inhibiting a coupling of light into the substrate.