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:
Feb. 19, 2019
Filed:
Sep. 14, 2017
Applicant:
Kabushiki Kaisha Toyota Chuo Kenkyusho, Nagakute-shi, Aichi-ken, JP;
Inventors:
Assignee:
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO, Nagakute, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/295 (2006.01); G02F 1/29 (2006.01);
U.S. Cl.
CPC ...
G02F 1/2955 (2013.01); G02F 2001/291 (2013.01); G02F 2201/30 (2013.01); G02F 2203/07 (2013.01); G02F 2203/15 (2013.01); G02F 2203/28 (2013.01);
Abstract
A switching optical antenna that includes: a waveguide including a light input end and a light output end; a ring waveguide coupled with the waveguide through a first directional coupler; a diffraction grating that is disposed within the ring waveguide and that is coupled with the ring waveguide through a second directional coupler; and a refractive index adjusting section that changes a refractive index of at least a portion of the ring waveguide.