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:
Apr. 10, 2018
Filed:
Aug. 15, 2016
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/225 (2006.01); G02B 6/28 (2006.01); G02B 6/122 (2006.01); G02B 6/126 (2006.01); G02F 1/21 (2006.01); G02B 6/293 (2006.01);
U.S. Cl.
CPC ...
G02F 1/2257 (2013.01); G02B 6/122 (2013.01); G02B 6/126 (2013.01); G02B 6/2813 (2013.01); G02B 6/29352 (2013.01); G02F 2001/212 (2013.01); G02F 2202/20 (2013.01); G02F 2203/07 (2013.01);
Abstract
Disclosed herein is an optical waveguide element that includes a substrate and a waveguide layer formed on the substrate and comprising lithium niobate. The waveguide layer has a slab part having a predetermined thickness and a ridge part protruding from the slab part. The maximum thickness of the slab part is 0.05 times or more and less than 0.4 times a wavelength of a light propagating in the ridge part.