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:
Oct. 11, 2016
Filed:
Nov. 26, 2014
Sumitomo Electric Device Innovations, Inc., Yokohama-shi, JP;
Ryota Teranishi, Yokohama, JP;
Sumitomo Electric Device Innovations, Inc., Yokohama-shi, JP;
Abstract
An optical receiver includes a semiconductor optical amplifier configured to amplify wavelength multiplexed light, an optical demultiplexer configured to demultiplex the wavelength multiplexed light amplified by the semiconductor optical amplifier into light of a plurality of signals having different wavelengths, a plurality of light-receiving elements configured to receive the signal light obtained by demultiplexing of the optical demultiplexer, a detector configured to detect an intensity of the wavelength multiplexed light of a previous stage of the optical demultiplexer, a memory configured to store an upper limit value of a drive current of the semiconductor optical amplifier corresponding to a detection result of the detector, and a controlling the drive current of the semiconductor optical amplifier by referring an output of the detector and the upper limit value.