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Power-Efficient Modulation Formats in Coherent Transmission Systems

Journal of Lightwave Technology, no. 22 (2009): 5115-5126

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Quadrature phase shift keyingOptical fiber polarizationElectromagnetic wave polarizationOptical fiber communicationSignal processing algorithmsMore(5+)

Abstract

Coherent optical transmission systems have a four-dimensional (4-D) signal space (two quadratures in two polarizations). These four dimensions can be used to create modulation formats that have a better power efficiency (higher sensitivity) than the conventional binary phase shift keying/quadrature phase shift keying (BPSK/QPSK) signals. ...More

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Erik Agrell

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Magnus Karlsson

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