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:
Dec. 23, 2014
Filed:
Jan. 23, 2012
Applicant:
Masao Nakata, Kawasaki, JP;
Inventor:
Masao Nakata, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/293 (2013.01); H04B 10/67 (2013.01);
U.S. Cl.
CPC ...
H04B 10/673 (2013.01); H04B 10/293 (2013.01);
Abstract
An optical receiving apparatus includes an optical amplification medium that receives an excitation light and an input light, an optical loss medium that receives an output light from the optical amplification medium, a monitor that detects a power level of an output light from the optical loss medium, a controller that controls a power of the excitation light such that the power level of the output light detected by the monitor is at a target value, and a receiver that receives the output light from the optical loss medium, the output light not being optically amplified.