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:
Aug. 31, 2021
Filed:
Apr. 17, 2018
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Abstract
A semiconductor MZM of the present invention includes the first and second signal electrodes formed to be parallel to the first and second arm waveguides, respectively; the first and second phase modulation electrodes that are branched from the first and second signal electrodes and that are provided on the first and second arm waveguides in a discrete manner along the first and second signal electrodes; the first and second ground electrodes formed parallelly along the first and second signal electrodes; and a plurality of connection wirings to connect the first and second ground electrodes between a plurality of points. A differential signal is inputted to or outputted from the first and second signal electrodes. The plurality of connection wirings adjacent to each other are arranged with an interval ¼ times smaller than wavelength of a signal propagated through the first and second signal electrodes.