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.

Date of Patent:
Jul. 19, 2022

Filed:

Jul. 09, 2019
Applicant:

Nippon Telegraph and Telephone Corporation, Tokyo, JP;

Inventors:

Eiichi Kuramochi, Tokyo, JP;

Akihiko Shinya, Tokyo, JP;

Masaya Notomi, Tokyo, JP;

Kengo Nozaki, Tokyo, JP;

Masato Takiguchi, Tokyo, JP;

Kenta Takata, Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/122 (2006.01); H01S 5/11 (2021.01);
U.S. Cl.
CPC ...
G02B 6/1225 (2013.01); H01S 5/11 (2021.01);
Abstract

The amount of outward shift of a lattice element () and a lattice element (), the outward shift being symmetrical with respect to a resonator center on a straight line, is 0.42 to 0.5 times a lattice constant of a photonic crystal. The amount of outward shift of a lattice element () and a lattice element (), the outward shift being symmetrical with respect to the resonator center on the straight line, is 0.26 to 0.38 times the lattice constant of the photonic crystal. The amount of outward shift of a lattice element () and a lattice element (), the outward shift being symmetrical with respect to the resonator center on the straight line, is 0.13 to 0.19 times the lattice constant of the photonic crystal. The amount of outward shift of a lattice element () and a lattice element (), the outward shift being symmetrical with respect to the resonator center on the straight line, is −0.1 to 0 times the lattice constant of the photonic crystal.


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