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:
Jun. 05, 2018
Filed:
Feb. 24, 2014
Applicant:
Nec Corporation, Minato-ku, Tokyo, JP;
Inventor:
Ken-ichiro Yoshino, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01J 1/26 (2006.01); G01J 1/44 (2006.01); G01J 1/04 (2006.01); G01J 1/16 (2006.01); G01J 1/42 (2006.01);
U.S. Cl.
CPC ...
G01J 1/0418 (2013.01); G01J 1/16 (2013.01); G01J 1/26 (2013.01); G01J 1/4228 (2013.01); G01J 2001/442 (2013.01); G01J 2001/444 (2013.01);
Abstract
(Object) To provide an optical receiver and a control method thereof that enable equalization of both the quantum efficiencies and the dark count probabilities of multiple photon detectors. (Solving Means) An optical receiver includes multiple photon detectors, a first equalizing means that equalizes either dark count probabilities or quantum efficiencies of the multiple photon detectors, and a second equalizing means that equalizes the other ones without affecting the equalization by the first equalizing means.