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:
Jul. 19, 2016
Filed:
Sep. 23, 2014
Applicant:
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Inventors:
Katsumi Uesaka, Yokohama, JP;
Yutaka Onishi, Yokohama, JP;
Assignee:
Sumitomo Electric Industries, Ltd., Osaka-shi, JP;
Primary Examiner:
Int. Cl.
CPC ...
G01B 9/02 (2006.01); G02B 6/10 (2006.01); G01J 9/02 (2006.01); G02B 6/42 (2006.01); G02B 6/12 (2006.01);
U.S. Cl.
CPC ...
G02B 6/10 (2013.01); G01J 9/0246 (2013.01); G02B 6/12007 (2013.01); G02B 6/4215 (2013.01); G02B 6/12009 (2013.01); G02B 2006/1215 (2013.01); G02B 2006/12061 (2013.01);
Abstract
Provided are an optical element and a wavelength monitor capable of detecting a wavelength with high accuracy and at high speed while suppressing a size. The optical element includes: a branch waveguide section configured to branch an input light beam and generate two outputs routed via paths having mutually different optical path lengths; and an optical synthesis section configured to synthesize the two outputs and output two optical signals having different light intensities with regards to a wavelength of the input light beam and exhibiting a mutual phase difference.