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13 - Electrical and Electronic Engineering, Metallurgy and Materials
University College London
Mitigation of Fiber Nonlinearity Using a Digital Coherent Receiver
While much of the previous work on DSP for optical communications focussed on the compensation of linear impairments, this paper deals with the mitigation of nonlinear impairments, the phenomena which ultimately limit the capacity of optical fibre communication systems. In particular, it proposes techniques for nonlinearity compensation for polarization-division-multiplexed 16QAM, the modulation format of choice for future 400GbE and 1Tbit/s+ systems. Many of the key concepts presented within the paper, underpin the EPSRC £4.8M programme grant UNLOC (EP/J017582/1). An invited talk on the work was given at the Tier 1 European Conference on Optical Communication in 2009.