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. 16, 2022
Filed:
May. 09, 2019
Applicant:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Inventors:
Tai Tsuchizawa, Tokyo, JP;
Takuma Aihara, Tokyo, JP;
Assignee:
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/122 (2006.01); G02B 6/132 (2006.01); G02B 6/12 (2006.01);
U.S. Cl.
CPC ...
G02B 6/122 (2013.01); G02B 6/132 (2013.01); G02B 2006/12061 (2013.01);
Abstract
Included are an optical waveguide including a first cladding layer formed on a substrate; a core formed on the first cladding layer; and a second cladding layer formed on the first cladding layer so as to cover the core. At least one of the first cladding layer and the second cladding layer is composed of a cladding material of silicon oxide containing deuterium atoms. The number of hydrogen atoms contained in the cladding material is smaller than the number of the deuterium atoms contained in the cladding material.