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:
Mar. 19, 2002
Filed:
Dec. 21, 1999
Applicant:
Inventors:
Yoshinobu Nekado, Ichihara, JP;
Shirou Nakamura, Ichihara, JP;
Assignee:
The Furukawa Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/10 ;
U.S. Cl.
CPC ...
G02B 6/10 ;
Abstract
An optical waveguide circuit having a waveguide core of a desired shape formed on a substrate and method of fabricating same. The optical waveguide circuit is manufactured in a manner such that light confinement portions having substantially the same refractive index as the waveguide core are arranged along one or both sides of the waveguide core. The waveguide core and the light confinement portions are formed simultaneously.