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. 11, 2002
Filed:
Nov. 10, 1999
Applicant:
Inventor:
Shahab Etemad, Warren, NJ (US);
Assignee:
Telcordia Technologies, Inc., Morristown, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 1/000 ; H04B 1/008 ;
U.S. Cl.
CPC ...
H04B 1/000 ; H04B 1/008 ;
Abstract
A system and method for securing DWDM networks that includes adding background (e.g., white) noise to a level up to the larger of the cross-talk signal or the background channel noise (e.g., amplified spontaneous emission level). The system comprises a white noise generator appropriately placed so that any leaked signals are masked by the white noise generated. Accordingly, only signals intended to be dropped are recoverable because all other signals would not be recoverable from the background white noise.