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:
Jan. 23, 2018
Filed:
Jan. 03, 2017
Applicant:
Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;
Inventor:
Akio Sugama, Atsugi, JP;
Assignee:
FUJITSU LIMITED, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/34 (2006.01); G02B 6/124 (2006.01); G02B 6/30 (2006.01);
U.S. Cl.
CPC ...
G02B 6/34 (2013.01); G02B 6/124 (2013.01); G02B 6/30 (2013.01);
Abstract
The invention relates to a grating coupler and an optical waveguide device having a stripe width that can be easily realized where light is transferred by means of a beam of which the form is close to that of a Gaussian beam. A striped member that becomes a grating and that is formed of a material of which the refractive index is different from that of the core layer is divided into a plurality of sections, and at the same time, the distance between the core layer and the surface of the striped member on the side opposite the surface that faces the core layer is different for each section.