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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.:

US 10971888 B1

PDFFull Text
Date of Patent:
Apr. 06, 2021

Filed:

Nov. 19, 2015

Optical amplifier

Applicant:

Mitsubishi Electric Corporation, Chiyoda-ku, JP;

Inventors:

Hiroshi Miura, Tokyo, JP;

Toshiyuki Tokura, Tokyo, JP;

Assignee:

Mitsubishi Electric Corporation, Chiyoda-ku, JP;

Attorney:

Oblon, McClelland, Maier & Neustadt, L.L.P.

Primary Examiner:

Eric L Bolda

Int. Cl.
CPC ...
H01S 3/13 (2006.01); H01S 3/067 (2006.01); H01S 3/10 (2006.01); H01S 3/0941 (2006.01); H01S 3/131 (2006.01); H01S 3/094 (2006.01); H01S 3/00 (2006.01); H01S 3/16 (2006.01); H04J 14/02 (2006.01); H04B 10/294 (2013.01);
U.S. Cl.
CPC ...
H01S 3/1305 (2013.01); H01S 3/06754 (2013.01); H01S 3/0941 (2013.01); H01S 3/1003 (2013.01); H01S 3/10015 (2013.01); H01S 3/1301 (2013.01); H01S 3/1312 (2013.01); H01S 3/13013 (2019.08); H01S 3/1608 (2013.01); H04B 10/294 (2013.01); H04J 14/0221 (2013.01); H01S 3/0078 (2013.01); H01S 3/06758 (2013.01); H01S 3/09415 (2013.01); H01S 3/094003 (2013.01); H01S 3/094011 (2013.01); H01S 3/10069 (2013.01); H01S 2301/04 (2013.01);
Abstract

An optical amplifier which can suppress, without measuring signal beam power at individual wavelengths, wavelength-dependence of gain with respect to a signal beam into which multiple signal beams having respective wavelengths different from each other are multiplexed. The optical amplifier can suppress wavelength-dependence of gain by giving loss in accordance with a linear-loss slope to an amplified signal beam. The optical amplifier includes a variable tilt equalizer for varying a loss slope value representing the slope of the loss slope and a tilt control unit for controlling a loss slope value of the variable tilt equalizer.

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