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. 07, 1979
Filed:
Aug. 12, 1977
Applicant:
Inventor:
Robert Olshansky, Addison, NY (US);
Assignee:
Corning Glass Works, Corning, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350 9631 ; 65 / ; 350 9630 ;
Abstract
In a multimode optical waveguide, coupling is promoted among guided modes while coupling to unguided modes is suppressed. The core includes perturbations having a power spectrum which decreases with increasing mode order and which has a plurality of minima. The length of each perturbation is such that a minimum in the power spectrum of the perturbation occurs at the critical frequency .omega..sub.c and the power spectrum is significantly reduced for high frequencies.