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:
Oct. 30, 2007
Filed:
Nov. 19, 2003
Henning Bülow, Kornwestheim, DE;
Fred Buchali, Waiblingen, DE;
Henning Bülow, Kornwestheim, DE;
Fred Buchali, Waiblingen, DE;
Alcatel, Paris, FR;
Abstract
A polarization mode dispersion (PMD) controller device for controlling the state of polarization of an optical light wave comprising a dispersion compensation unit () and an adaptation control unit (), wherein the dispersion compensation unit () comprises a multitude of compensation stages processing the optical light wave, and wherein the adaptation control unit () controls the dispersion compensation unit () is characterized in that at least one feed-forward signal tap (--) is provided tapping the optical light wave inserted into one of the compensation stages, that the feed-forward signal(s) is(are) fed into a distortion analyzer unit () and that the distortion analyzer unit () provides the adaptation control unit () with information about the incoming optical light wave. It accelerates the adaptation speed and lowers the costs of a high-speed PMD controller device.