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. 11, 2003
Filed:
Mar. 08, 2000
James Power Gordon, Rumson, NJ (US);
Robert Meachem Jopson, Rumson, NJ (US);
Herwig Werner Kogelnik, Rumson, NJ (US);
Lynn E. Nelson, Monmouth Beach, NJ (US);
Lucent Technologies Inc., Murray Hill, NJ (US);
Abstract
Four different light signals, all of the same optical frequency, but, having different states of polarization, are transmitted through an optical device and the mean signal delay of each of the light signals is measured. Calculations, based upon the relationship, &tgr; =&tgr; −½ {right arrow over (&OHgr;)}·{overscore (s)}, describing the polarization dependence of &tgr; (a measured mean signal delay) through the device as a function of &tgr; (a polarization independent delay component of the device), {right arrow over (&OHgr;)} (the PMD vector at the device input) and {overscore (s)} (the input Stokes vector of the light signal), yield the PMD of the device. Also, by comparing data taken at adjacent wavelengths, the chromatic dispersion of the optical device can be accurately measured even in the presence of PMD.