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. 14, 2015
Filed:
Dec. 12, 2011
Kenji Yanagisawa, Nagano, JP;
Hideki Yonekura, Nagano, JP;
Takanori Yamamoto, Nagano, JP;
Kazunao Yamamoto, Nagano, JP;
Kenji Yanagisawa, Nagano, JP;
Hideki Yonekura, Nagano, JP;
Takanori Yamamoto, Nagano, JP;
Kazunao Yamamoto, Nagano, JP;
SHINKO ELECTRIC INDUSTRIES CO., LTD., Nagano-shi, JP;
Abstract
A method of manufacturing an optical waveguide, includes forming a first light path core layer having a first light path length on a first cladding layer, forming a groove portion having an inclined surface in an end side of the first light path core layer, forming a second light path core layer having a second light path length which is longer than the first light path length, in a lateral area of the first light path core layer, forming a groove portion having an inclined surface, arranged to an outer side than the groove portion of the first light path core layer, in an end side of the second light path core layer, forming partially a metal layer on the respective inclined surfaces of the first and second light path core layer, and forming a second cladding layer covering the first and second light path core layer.