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:
Nov. 25, 2003
Filed:
Jun. 10, 2002
Applicant:
Inventors:
Feiling Wang, Medford, MA (US);
Xiao-Li Li, Lexington, MA (US);
Yingyin Zou, Burlington, MA (US);
Wei Hu, Plainsboro, NJ (US);
Assignee:
Corning Applied Technologies Corporation, Woburn, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 2/100 ;
U.S. Cl.
CPC ...
G01N 2/100 ;
Abstract
A polarization mode dispersion center ( ) measures PMD impairment through the cross-correlation of optical pulses. A second variable phase retarder plate ( ) is oriented with polarization eigenstates at preferably 45 degree angle with respect to those eigenstates of a first variable phase retarder plate ( ) to provide controllable phase retardations that can be varied and measured as an indication of PMD impairment.