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:
Dec. 14, 2010
Filed:
Feb. 09, 2010
Mikhail Boroditsky, South Amboy, NJ (US);
Mikhail Brodsky, Milbourn, NJ (US);
Nicholas J. Frigo, Little Silver, NJ (US);
Peter Magill, Freehold, NJ (US);
Mikhail Boroditsky, South Amboy, NJ (US);
Mikhail Brodsky, Milbourn, NJ (US);
Nicholas J. Frigo, Little Silver, NJ (US);
Peter Magill, Freehold, NJ (US);
At&T Intellectual Property II, L.P., Reno, NV (US);
Abstract
The present invention provides a method of determining a mean differential group delay associated with a length of optical fiber. The method including measuring a magnitude of a polarization mode dispersion vector as a function of frequency, using a frequency-domain polarization mode dispersion measurement apparatus, where the magnitude of the polarization mode dispersion vector is a scalar differential group delay. Also the method calculates a frequency derivative of the scalar differential group delay from the magnitude of the polarization mode dispersion vector to obtain a first result. The frequency derivative of the scalar differential group delay being a scalar second-order polarization mode dispersion function. The method further multiplies a proportionality coefficient Bby the first result to calculate the mean differential group delay. Also, the method outputs a value of the mean differential group delay.