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:
Feb. 25, 2014
Filed:
May. 30, 2010
Applicants:
David Jimmy Dahan, Tel-Aviv, IL;
Uri Mahlab, Or Yehuda, IL;
David Levy, Shoham, IL;
Inventors:
Assignee:
ECI Telecom Ltd., Petach-Tikva, IL;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 10/08 (2011.01); H04B 17/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
For determining OSNRof a real optical signal carried in an optical network link, the following has been proposed: tapping a portion of the real optical signal, altering the tapped signal portion by adding to it in-band artificial noise signal, thus obtaining a combined signal, scattering the combined signal by stimulated Brillouin or Raman scattering (SBS or SRS) in an optical element, extracting a signal back reflected by SBS/SRS from the optical element, determining OSNRof the back reflected signal and deriving the OSNRfrom the OSNRknowing absolute and/or relative power of the added artificial noise.