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:
Aug. 24, 2021
Filed:
Feb. 05, 2019
Applicant:
Ciena Corporation, Hanover, MD (US);
Inventors:
Assignee:
Ciena Corporation, Hanover, MD (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J 1/44 (2006.01); H04B 10/69 (2013.01); G01J 1/42 (2006.01); H03F 3/08 (2006.01); H03F 3/45 (2006.01);
U.S. Cl.
CPC ...
G01J 1/44 (2013.01); G01J 1/4228 (2013.01); H03F 3/08 (2013.01); H03F 3/45076 (2013.01); H04B 10/6931 (2013.01); G01J 2001/444 (2013.01); G01J 2001/4406 (2013.01); H03F 2200/144 (2013.01);
Abstract
A method and system, in an optical receiver, includes receiving a first photocurrent from a first photodetector and a second photocurrent from a second photodetector; amplifying the first photocurrent with a first amplifier to provide a first output signal and the second photocurrent with a second amplifier to provide a second output signal; adjusting a frequency response of a first path the first photocurrent and a second path of the second photocurrent; and determining a difference between the adjusted first photocurrent and the adjusted second photocurrent.