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:
Jun. 06, 2023
Filed:
Apr. 05, 2021
Applicant:
Openlight Photonics, Inc., Goleta, CA (US);
Inventor:
John Parker, Goleta, CA (US);
Assignee:
OpenLight Photonics, Inc., Goleta, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/516 (2013.01); G02F 1/015 (2006.01); H04B 10/40 (2013.01);
U.S. Cl.
CPC ...
H04B 10/5161 (2013.01); G02F 1/015 (2013.01); H04B 10/40 (2013.01); G02F 1/0155 (2021.01);
Abstract
An optical modulator of an optical transceiver can be calibrated using intermediate frequency (IF) signals to generate accurate crossing point values (e.g., DC bias). A photodiode can measure output from the optical modulator at intermediate and high-speed frequencies to generate crossing point values that avoid crossing point errors. A target crossing point can be selected at any value (e.g., 40%, 50%) and bias values can be generated from IF signals and then stored in a lookup date for setting the modulator bias during operation.