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:
May. 29, 2012
Filed:
Jul. 12, 2010
Takami Hikita, Ibaraki, JP;
Junichi Fujisawa, Ibaraki, JP;
Takami Hikita, Ibaraki, JP;
Junichi Fujisawa, Ibaraki, JP;
Nitto Denko Corporation, Ibaraki-shi, JP;
Abstract
An optical waveguide device is provided which is capable of reducing light propagation losses in the cores of an optical waveguide when the optical waveguide is formed on a surface of a substrate, regardless of the type of substrate. A photosensitive resin layer (A) for over cladding layer formation is made of a photosensitive resin composition of a non-solvent type, and is heated prior to the exposure thereof to light. This causes interface portions between the cores () and the photosensitive resin layer (A) to be formed into mixed layers (). This reduces light propagation losses.