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. 04, 2020
Filed:
Apr. 11, 2019
Sumitomo Electric Industries, Ltd., Osaka, JP;
Naoya Kono, Osaka, JP;
SUMITOMO ELECTRIC INDUSTRIES, LTD., Osaka, JP;
Abstract
A Mach-Zehnder modulator includes an optical waveguide, first and second arm waveguides, an embedded area, an conductive semiconductor layer, first and second signal upper layers extending over the embedded area and connected to the first and second arm waveguides, a first ground upper layer extending over the embedded area along at least one of the first and the second signal upper layers, a ground lower layer connected to the first ground upper layer and extending through the embedded area along the and second first signal upper layers, and a first conductive upper layer connected to the ground lower layer and extending over the embedded area along at least one of the first and second signal upper layers. The ground lower layer extends between the optical waveguide, the first signal upper layer, and the second signal upper layer.