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. 18, 2019
Filed:
Dec. 22, 2017
Applicant:
Acacia Communications, Inc., Maynard, MA (US);
Inventors:
Christian Rasmussen, Maynard, MA (US);
Seo Yeon Park, Maynard, MA (US);
Mehrdad Givehchi, Maynard, MA (US);
Assignee:
Acacia Communications, Inc., Maynard, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/54 (2013.01); H04B 10/50 (2013.01);
U.S. Cl.
CPC ...
H04B 10/541 (2013.01); H04B 10/50575 (2013.01);
Abstract
Disclosed are bias control methods for Mach-Zehnder modulators for the generation of optical QAM signals while ensuring correct I/Q polarity of the generated optical QAM signal. One exemplary method involves temporarily offsetting I and Q biases from ideal transmission null bias points while another illustrative method temporarily makes I and Q data streams identical.