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Performance analysis of a spectrally efficient QAM c oherent OFDM optical l ink



  1. Anna University, Research Scholar , Chennai, India , 600025
  2. Professor , National Engineering College, Kovilpatti, India , 628503


Coherent detection is a promising technique to compensate for the linear and non linear impairments of an optical communication link. Coherent optical receivers followed by Digital Signal Processing (DSP) facilitate in demodulating advanced modulation formats like Quadrature Amplitude Modulation (QAM ), providing an effective solution to upgrade optical backbone network. Orthogonal Frequency Division Modulation (OFDM) is being widely studied to implement scalable, dispersion compensated high speed optical networks. This work aims to design and analyze a spectrally efficient QAM OFDM opt ical network. In order to further boost the system capacity dual polarized signal has been investigated..


Coherent detection, CO OFDM , Dispersion compensation, DSP, Spectral efficiency.


P. RISHI, S. TAMIL SELVI, Performance analysis of a spectrally efficient QAM c oherent OFDM optical l ink, Optoelectronics and Advanced Materials - Rapid Communications, 12, 5-6, May-June 2018, pp.299-306 (2018).

Submitted at: Sept. 20, 2017

Accepted at: June 7, 2018