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:
May. 24, 2022
Filed:
May. 23, 2019
Applicant:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Inventors:
Assignee:
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/34 (2006.01); G02B 6/30 (2006.01); H01L 27/144 (2006.01);
U.S. Cl.
CPC ...
G02B 6/34 (2013.01); G02B 6/30 (2013.01); H01L 27/1446 (2013.01);
Abstract
A photodiode including a p-type region and an n-type region formed in a core of a grating coupler is provided. The p-type region and the n-type region are each formed as a region having a rectangular shape extending in an array direction of a grating as seen in plan view and are arranged in a direction orthogonal to the array direction of the grating and parallel to a plane of a substrate. A plurality of the p-type regions and a plurality of the n-type regions are formed and alternately arranged.