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. 15, 2005
Filed:
Sep. 25, 2002
Marc Bohn, Munich, DE;
Georg Mohs, Milltown, NJ (US);
Sven Otte, Kiel, DE;
Christian Scheerer, Ottawa, CA;
Christoph Glingener, Feldkirchen-Westerham, DE;
Jan Mietzner, Mielkendorf, DE;
Werner Rosenkranz, Laboe, DE;
Marc Bohn, Munich, DE;
Georg Mohs, Milltown, NJ (US);
Sven Otte, Kiel, DE;
Christian Scheerer, Ottawa, CA;
Christoph Glingener, Feldkirchen-Westerham, DE;
Jan Mietzner, Mielkendorf, DE;
Werner Rosenkranz, Laboe, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
A compensation system for adaptive equalization of an optical signal, wherein an optical filter, whose complex coefficients are adjustable, is used for signal equalization. The quality of the optical signal is used, after conversion to an electrical data signal, as a control criterion. The compensation device can largely compensate for distortion produced by dispersion, polarization mode dispersion or self phase modulation. An optical compensation filter with a wide free spectral range is used to compensate for the wavelength-dependent dispersion in a wavelength-division multiplexed system. The setting of the filter may be fixed, or may be adjusted adaptively in a closed control loop.