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:
Dec. 09, 2025
Filed:
Mar. 09, 2023
Applicant:
Infinera Corporation, San Jose, CA (US);
Inventor:
Jiaming Zhang, Macungie, PA (US);
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 1/00 (2006.01); H03M 1/06 (2006.01); H03M 1/66 (2006.01);
U.S. Cl.
CPC ...
H03M 1/0626 (2013.01); H03M 1/662 (2013.01);
Abstract
Consistent with the present disclosure, low pass filters are provided in the electrical paths connecting digital to analog converter (DAC) circuitry to an optical block package (also referred to as a 'gold box'). The low pass filter blocks or substantially attenuates high frequency noise components present in an analog signal output from the DAC, thereby reducing errors that might otherwise be present in the transmitted data.