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:
Jan. 31, 2017
Filed:
Jul. 11, 2003
John Mcnicol, Ottawa, CA;
Kieran Parsons, Ottawa, CA;
Leo Strawczynski, Ottawa, CA;
Kim B. Roberts, Nepean, CA;
Maurice S. O'sullivan, Ottawa, CA;
John McNicol, Ottawa, CA;
Kieran Parsons, Ottawa, CA;
Leo Strawczynski, Ottawa, CA;
Kim B. Roberts, Nepean, CA;
Maurice S. O'Sullivan, Ottawa, CA;
CIENA CORPORATION, Hanover, MD (US);
Abstract
Optical dispersion imposed on a communications signal conveyed through an optical communications system is compensated by modulating the communications signal in the electrical domain. A compensation function is determined that substantially mitigates the chromatic dispersion. The communications signal is then modulated in the electrical domain using the compensation function. In preferred embodiments, compensation is implemented in the transmitter, using a look-up-table and digital-to-analog converter to generate an electrical predistorted signal. The electrical predistorted signal is then used to modulate an optical source to generate a corresponding predistorted optical signal for transmission through the optical communications system.