Coherent 16 Quadrature Amplitude Modulation (16QAM) Optical Communication Systems


  • Fady El-Nahal Technical University of Munich



Coherent optical fiber communications for data rates of 100Gbit/s and beyond have recently been studied extensively primarily because high sensitivity of coherent receivers could extend the transmission distance. Spectrally efficient modulation techniques such as M-ary quadrature amplitude modulation (M-QAM) can be employed for coherent optical links. The integration of multi-level modulation formats based on coherent technologies with wavelength-division multiplexed (WDM) systems is key to meet the aggregate bandwidth demand. This paper reviews coherent 16 quadrature amplitude modulation (16QAM) systems to scale the network capacity and maximum reach of current optical communication systems to accommodate traffic growth.

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How to Cite

F. El-Nahal, “Coherent 16 Quadrature Amplitude Modulation (16QAM) Optical Communication Systems”, Photonics Lett. Pol., vol. 10, no. 2, pp. 57–59, Jun. 2018.