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:
Jan. 18, 2011
Filed:
Mar. 09, 2005
Marco Secondini, Rome, IT;
Enrico Forestieri, Parma, IT;
Giancarlo Prati, Parma, IT;
Giulio Colavolpe, Parma, IT;
Marco Secondini, Rome, IT;
Enrico Forestieri, Parma, IT;
Giancarlo Prati, Parma, IT;
Giulio Colavolpe, Parma, IT;
Ericsson AB, Stockholm, SE;
Abstract
A polarization multiplex transmission system () comprises two optical signals (z, z) transmitted over the same optical fiber () at the same wavelength but with orthogonal polarizations. The system is characterized by receiving apparatus () which is operable to filter the two components with orthogonal polarization of the signal received in accordance with an appropriate transfer matrix which is dynamically controlled on the basis of the output signals in such a manner as to approximate the reverse transfer matrix of the fiber in the region of the spectrum occupied by the signal so as to compensate for Polarization Mode Dispersion (PMD) and polarization rotation introduced by the fiber and eliminating distortion and mutual interference effects for both the signals and thereby obtain a demultiplexed output corresponding to the two transmitted signals.