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:
Sep. 06, 2016
Filed:
Jul. 22, 2015
Sumitomo Electric Industries, Ltd., Osaka, JP;
Naoya Kono, Yokohama, JP;
Kazuhiko Horino, Hadano, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Abstract
A semiconductor optical device including: a substrate including a first region and a second region; a first optical waveguide disposed on the first region, the first optical waveguide including a core layer and a cladding layer disposed on the core layer, the cladding layer including a first cladding region and a semiconductor layer disposed on the first cladding region, the first optical waveguide extending from an end facet of the semiconductor optical device to a boundary between the first region and the second region; a second optical waveguide disposed on the second region; and a region disposed on the cladding layer, the region having a lower refractive index than that of the first cladding region. The semiconductor layer has a higher refractive index than that of the first cladding region. The thickness of the core layer monotonically increases from the end facet toward the boundary.