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. 03, 2019
Filed:
Nov. 03, 2016
Applicant:
Futurewei Technologies, Inc., Plano, TX (US);
Inventors:
Xueyan Zheng, Andover, MA (US);
Yu Sheng Bai, Los Altos Hills, CA (US);
Xiao Shen, San Bruno, CA (US);
Yangjing Wen, Cupertino, CA (US);
Assignee:
Futurewei Technologies, Inc., Plano, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/00 (2013.01); H04B 10/556 (2013.01); H04B 10/516 (2013.01); H04B 10/50 (2013.01); H04B 10/54 (2013.01); H04J 14/00 (2006.01);
U.S. Cl.
CPC ...
H04B 10/5561 (2013.01); H04B 10/5051 (2013.01); H04B 10/5055 (2013.01); H04B 10/50575 (2013.01); H04B 10/5161 (2013.01); H04B 10/541 (2013.01);
Abstract
An optical modulator for generating quadrature amplitude modulation (nQAM) and phase-shift keying (nPSK) signals with tunable modulation efficiency. The modulator includes a controlling circuit for adjusting the modulation efficiency or modulation depth of the modulator by controlling the direct current (DC) bias.