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Fiber Nonlinear Impact on Hybrid Ultra-Dense WDM based Optical Networks

Reis, J.D. ; Monteiro, P.M.A ; Teixeira, A.

Fiber Nonlinear Impact on Hybrid Ultra-Dense WDM based Optical Networks, Proc International Conf. on Transparent Networks – ICTON , Munich, Germany, Vol. 12, pp. 1 - 4, July, 2010.

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Abstract
This paper addresses the system impact of fiber nonlinear crosstalk on ultra-dense hybrid coherent optical WDM
optical network. Using Volterra theory, the transmission performance in terms of error vector analysis is
evaluated and different contributions of nonlinear crosstalk are calculated. Firstly Volterra theory is validated
against split-step Fourier simulations considering both intensity-modulated direct-detected channels and
quadrature phase-shift keying (QPSK) channels co-propagating into the fiber at a very high density:
32x1.25Gbaud spaced at 3GHz. Then, the transmission performance of QPSK channels employing coherent
detection is evaluated under different network topologies.