The present document relates to optical transmission systems. In particular, the present document relates to methods and systems for the mitigation of Cross- Polarization Modulation (XPOLM) in optical transmission systems. A coherent optical receiver (200) adapted to receive an optical signal transmitted over an optical transmission channel exhibiting XPOLM is described. The received optical signal comprises a first polarization component and a second polarization component. The first and second polarization components comprise sequences of Mary phase shift keying, referred to as MPSK, symbols, respectively, M being an integer, with M > 2. The coherent optical receiver (200) comprises a conversion and processing unit (201, 202) adapted to generate a set of digital signals based on the received optical signal; a polarization de-multiplexing unit (203) adapted to demultiplex the set of digital signals into a first two dimensional, referred to as complex, component in a first polarization axis and a second complex component in a second polarization axis; and an XPOLM compensation unit (204) adapted to transform the first and second complex components into the Stokes space, thereby yielding a set of Stokes parameters; determine a rotation of the first and second polarization axes based on the set of Stokes parameters; and determine XPOLM compensated first and second complex components by transforming the first and second complex components in accordance to the determined rotation of the first and second polarization axes.

Nonlinear Cross-Polarization Mitigation Algorithm / Massimiliano, Salsi; Amirhossein, Ghazisaeidi; Serena, Paolo. - (2013), pp. 1-23.

Nonlinear Cross-Polarization Mitigation Algorithm

SERENA, Paolo
2013-01-01

Abstract

The present document relates to optical transmission systems. In particular, the present document relates to methods and systems for the mitigation of Cross- Polarization Modulation (XPOLM) in optical transmission systems. A coherent optical receiver (200) adapted to receive an optical signal transmitted over an optical transmission channel exhibiting XPOLM is described. The received optical signal comprises a first polarization component and a second polarization component. The first and second polarization components comprise sequences of Mary phase shift keying, referred to as MPSK, symbols, respectively, M being an integer, with M > 2. The coherent optical receiver (200) comprises a conversion and processing unit (201, 202) adapted to generate a set of digital signals based on the received optical signal; a polarization de-multiplexing unit (203) adapted to demultiplex the set of digital signals into a first two dimensional, referred to as complex, component in a first polarization axis and a second complex component in a second polarization axis; and an XPOLM compensation unit (204) adapted to transform the first and second complex components into the Stokes space, thereby yielding a set of Stokes parameters; determine a rotation of the first and second polarization axes based on the set of Stokes parameters; and determine XPOLM compensated first and second complex components by transforming the first and second complex components in accordance to the determined rotation of the first and second polarization axes.
Nonlinear Cross-Polarization Mitigation Algorithm / Massimiliano, Salsi; Amirhossein, Ghazisaeidi; Serena, Paolo. - (2013), pp. 1-23.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2762132
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