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:
Dec. 11, 2018
Filed:
Feb. 27, 2017
Fujikura Ltd., Tokyo, JP;
Norihiro Ishikura, Sakura, JP;
FUJIKURA LTD., Tokyo, JP;
Abstract
Provided is an optical modulation element which includes an optical waveguide. The optical waveguide includes: a rib part; a first slab part extending from the first side face of the rib part; aid a second slab part extending from the second side face of the rib part. The optical waveguide includes a first semiconductor region and a second semiconductor region which have an opposite conductive type from each other. The first semiconductor region includes an upper section, a lateral section, and a lower section. The second semiconductor region is sandwiched between the upper section and the lower section so as to be substantially in direct contact with the upper section, the lateral section, and the lower section. At least one of an end face of the upper section and an end face of the lower section flushes with the first side face of the rib part.