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:
Nov. 24, 2015

Filed:

Dec. 27, 2012
Applicants:

Fujitsu Limited, Kawasaki-shi, Kanagawa, JP;

Nec Corporation, Minato-ku, Tokyo, JP;

Inventors:

Nobuaki Hatori, Tsukuba, JP;

Masashige Ishizaka, Tokyo, JP;

Takanori Shimizu, Tokyo, JP;

Assignees:

FUJITSU LIMITED, Kawasaki, JP;

NEC CORPORATION, Tokyo, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/036 (2006.01); G02B 6/122 (2006.01); G02B 6/30 (2006.01); G02B 6/12 (2006.01); G02B 6/136 (2006.01);
U.S. Cl.
CPC ...
G02B 6/036 (2013.01); G02B 6/1228 (2013.01); G02B 6/305 (2013.01); G02B 6/136 (2013.01); G02B 6/30 (2013.01); G02B 2006/12097 (2013.01); G02B 2006/12195 (2013.01);
Abstract

The spot size converter includes a first cladding layer, a first core layer and a second core layer arranged side by side on the first cladding layer so as to extend from a first end which receives/outputs light along a direction from the first end toward a second end, a third core layer which is disposed on the first cladding layer between the first and second core layers, is a member different from the first and second core layers, and extends to the second end along the direction from the first end toward the second end, and a second cladding layer disposed on the first, second, and third core layers.


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