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:
Feb. 02, 2021
Filed:
Apr. 08, 2020
Applicant:
Ciena Corporation, Hanover, MD (US);
Inventors:
Assignee:
Ciena Corporation, Hanover, MD (US);
Primary Examiner:
Int. Cl.
CPC ...
H03G 3/30 (2006.01); H03F 3/08 (2006.01); H04B 10/61 (2013.01);
U.S. Cl.
CPC ...
H03G 3/3084 (2013.01); H03F 3/08 (2013.01); H04B 10/61 (2013.01); H03F 2200/129 (2013.01); H03F 2200/471 (2013.01); H03G 2201/103 (2013.01);
Abstract
A coherent optical modem includes one or more inputs; one or more amplifier circuits, each coupled to a respective input of the one or more inputs; and one or more receiver circuits each including an analog-to-digital converter, each coupled to a respective amplifier circuit of the one or more amplifier circuits; wherein the one or more amplifier circuits are configured to implement an automatic gain control loop to provide a constant signal amplitude at an input of the analog-to-digital converter of a respective receiver circuit.