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:
Jan. 27, 2026
Filed:
Nov. 28, 2023
Cisco Technology, Inc., San Jose, CA (US);
Alexander C. Kurylak, Nazareth, PA (US);
Sanjay Sunder, Allentown, PA (US);
Pratiksh Parikh, Macungie, PA (US);
Jenjen Tiao, Allentown, PA (US);
Bibhu P. Das, Philadelphia, PA (US);
Kadaba Lakshmikumar, Hillsborough, NJ (US);
CISCO TECHNOLOGY, INC., San Jose, CA (US);
Abstract
Provided herein are techniques to facilitate automatic gain control for an optical receiver. In one example, a method may include for a first mode, first adjusting, for a received optical input signal, at least one of: a coarse gain of a programmable gain amplifier (PGA), a fine gain of the PGA, or an attenuation of a variable optical attenuator (VOA) until a voltage swing peak value of an output signal of the optical receiver satisfies a first voltage swing peak range. The method may further include, through a second mode, triggering second adjusting of at least one of the VOA attenuation or the PGA fine gain based on determining that the voltage swing peak value of the output signal does not satisfy a second voltage swing peak range or that another voltage swing peak value obtained from an external signal processing device does not satisfy another voltage swing peak range.