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:
Nov. 19, 2024
Filed:
Jul. 24, 2019
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Hidetaka Nishi, Tokyo, JP;
Shinji Matsuo, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
An embodiment plasmonic waveguide includes a first metal layer formed on a substrate, an electro-optic thin film formed on the first metal layer and including a material having an electro-optic effect, and a second metal layer formed on the electro-optic thin film. In an embodiment, a waveguide region in which the first metal layer and the second metal layer overlap each other in a direction normal to a planar surface of the substrate (layer stacking direction), the waveguide region extending in the planar surface direction of the substrate, is included. For example, the first metal layer and the second metal layer are formed only in the waveguide region, and each of respective widths of the first metal layer and the second metal layer is equal to a width of an overlap between the first metal layer and the second metal layer.