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. 24, 2006
Filed:
Sep. 30, 2002
Christoph Glingener, Feldkirchen-Westerham, DE;
Christoph Glingener, Feldkirchen-Westerham, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
In an optical transmission system, a first modulated signal with a first transmission bit rate is generated at the transmitting end by modulating a first carrier signal with the first data signal, using a nonreturn to zero coding, and a second modulated signal with a second transmission bit rate is generated by modulating a second carrier signal with the second data signal, using a return to zero coding. The first and second modulated signal are polarized orthogonally with respect to one another and combined to form an optical multiplex signal and transmitted. At the receiving end, the optical multiplex signal is conducted via a polarization control element to a polarization splitter which splits the optical multiplex signal into the first and second modulated signal. The first modulated signal is converted into a first electrical signal and the second modulated signal is converted into a second electrical signal, the spectral component of the first and/or the second electrical signal is determined at the frequency corresponding to the first transmission rate and from this at least one control signal is derived for controlling the polarization control element.