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:
Jan. 23, 2018
Filed:
Oct. 12, 2016
Applicant:
Ngk Insulators, Ltd., Nagoya, JP;
Inventors:
Keiichiro Asai, Nagoya, JP;
Shoichiro Yamaguchi, Ichinomiya, JP;
Jungo Kondo, Miyoshi, JP;
Naotake Okada, Anjo, JP;
Tetsuya Ejiri, Kasugai, JP;
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D 11/00 (2006.01); G02B 6/136 (2006.01); G02B 6/124 (2006.01); G02B 6/132 (2006.01); G02B 5/18 (2006.01); G02B 6/12 (2006.01);
U.S. Cl.
CPC ...
G02B 6/136 (2013.01); G02B 5/1857 (2013.01); G02B 6/124 (2013.01); G02B 6/132 (2013.01); G02B 2006/12097 (2013.01);
Abstract
A plurality of Bragg gratings are formed at predetermined locations of a laminate including a mounting substrate, a clad layer provided on the mounting substrate and an optical material layer provided on the clad layer. Optical waveguides are formed each including at least each of the Bragg gratings. Masks are formed each covering a region corresponding to each of the grating elements on the optical material layer. The optical material layer and clad layer are etched to shape an end face of each of the grating elements.