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. 05, 2017
Filed:
Feb. 13, 2017
Applicant:
Futurewei Technologies, Inc., Plano, TX (US);
Inventors:
Assignee:
Futurewei Technologies, Inc., Plano, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/225 (2006.01); G02F 1/01 (2006.01); H04B 10/54 (2013.01); G02F 1/21 (2006.01);
U.S. Cl.
CPC ...
G02F 1/2255 (2013.01); G02F 1/0147 (2013.01); H04B 10/541 (2013.01); G02F 2001/212 (2013.01); G02F 2201/58 (2013.01);
Abstract
A technique for tuning a silicon photonics (SiP) based nested (parent/child) Mach-Zehnder modulator (MZM). The technique includes a sequence of applying dither tones on individual arms of the child MZMs, observing changes in the output of the MZM, and adjusting the MZM until reaching the null points for the child MZMs and the quad point for the parent MZM.