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:
Sep. 28, 2021
Filed:
Apr. 24, 2020
Ciena Corporation, Hanover, MD (US);
Francisco Javier Vaquero-Caballero, Valladolid, ES;
Kevin Stuart Farley, Ottawa, CA;
Ciena Corporation, Hanover, MD (US);
Abstract
A first signal is generated having a first frequency spectrum comprising one or more stopbands in which components of the first signal exhibit attenuated energy relative to an average energy of the first signal. A second signal is generated having a second frequency spectrum comprising non-zero energy at frequencies within the one or more stopbands. A third signal is generated by a crosstalk-inducing subsystem from a combination of the first signal and the second signal. The third signal is detected at a receiver device and an estimate of crosstalk induced by the crosstalk-inducing subsystem is calculated using a measurement of the third signal at the frequencies within the one or more stopbands. According to some examples, the second frequency spectrum comprises a tone within at least one of the stopbands.