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. 30, 2007
Filed:
Sep. 12, 2002
Michael Fishteyn, Bridgewater, NJ (US);
Tsing Hua Her, New Providence, NJ (US);
Stephan F. Wielandy, Hillsborough, NJ (US);
Michael Fishteyn, Bridgewater, NJ (US);
Tsing Hua Her, New Providence, NJ (US);
Stephan F. Wielandy, Hillsborough, NJ (US);
Fitel U.S.A. Corp., Norcross, GA (US);
Abstract
An optical performance monitor particularly well-suited for use in dense wavelength-division multiplexed (DWDM) systems includes both a nonlinear optical detector and a conventional linear detector. The nonlinear optical detector, which may comprise a quadratic detector, is used to provide information, on a channel-by-channel basis, regarding chromatic dispersion, polarization mode dispersion and accumulated amplified spontaneous emission (ASE) noise in each signal wavelength.