Frequency-Domain Chromatic Dispersion Equalization Using Overlap-Add Methods in Coherent Optical System

Tianhua Xu; Gunnar Jacobsen; Sergei Popov; Marco Forzati; Jonas Martensson; Marco Mussolin; Jie Li; Ke Wang; Yimo Zhang; Ari T. Friberg

doi:10.1515/joc.2011.022

arXiv · 1603.00734

Frequency-Domain Chromatic Dispersion Equalization Using Overlap-Add Methods in Coherent Optical System

Tianhua Xu·Gunnar Jacobsen·Sergei Popov·Marco Forzati·Jonas Martensson·Marco Mussolin·Jie Li·Ke Wang·Yimo Zhang·Ari T. Friberg

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Abstract

The frequency domain equalizers (FDEs) employing two types of overlap-add zero-padding (OLA-ZP) methods are applied to compensate the chromatic dispersion in a 112-Gbit/s non-return-to-zero polarization division multiplexed quadrature phase shift keying (NRZ-PDM-QPSK) coherent optical transmission system. Simulation results demonstrate that the OLA-ZP methods can achieve the same acceptable performance as the overlap-save method. The required minimum overlap (or zero-padding) in the FDE is derived, and the optimum fast Fourier transform length to minimize the computational complexity is also analyzed.

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Tianhua Xu, Gunnar Jacobsen, Sergei Popov, Marco Forzati, Jonas Martensson, Marco Mussolin, Jie Li, Ke Wang, Yimo Zhang, Ari T. Friberg. 2016-03-02. Frequency-Domain Chromatic Dispersion Equalization Using Overlap-Add Methods in Coherent Optical System. https://doi.org/10.1515/joc.2011.022

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