Multidimensional modulation formats for coherent optical communications
Paper i proceeding, 2016

Coherent optical communication systems applying modulation formats with a dimensionality of four or higherare investigated and compared to systems using conventional formats. Higher dimensionality can be achieved by applying modulation over more than one polarization, time-slot, wavelength, mode or core. Both uncoded systems and systems applying forward-error correction (FEC) coding are studied in terms of spectral efficiency and sensitivity. It is shown that increasing the dimensionality for a constant spectral efficiency improves the sensitivity substantially if no coding is applied, whereas the corresponding gains generally are much smaller in FEC-coded systems.

multidimensional modulation formats

Modulation formats

asymptotic power efficiency

coherent optical communication systems

power efficiency


Tobias Eriksson

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

Erik Agrell

Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk

Magnus Karlsson

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

Proceedings of SPIE - The International Society for Optical Engineering

Vol. 9774 977403
978-151060009-6 (ISBN)

Next-Generation Optical Communication: Components, Sub-Systems, and Systems V
San Francisco, USA,


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