Nonlinear compensation and crosstalk suppression for 4 × 1608Gb/s WDM PDM-QPSK signal with heterodyne detection | Zendy

Junwen Zhang | Zendy; Jianjun Yu | Zendy; Nan Chi | Zendy; Ze Dong | Zendy; Xinying Li | Zendy

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Nonlinear compensation and crosstalk suppression for 4 × 1608Gb/s WDM PDM-QPSK signal with heterodyne detection

Author(s) -

Junwen Zhang,

Jianjun Yu,

Nan Chi,

Ze Dong,

Xinying Li

Publication year - 2013

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.21.009230

Subject(s) - wavelength division multiplexing , phase shift keying , polarization division multiplexing , heterodyne detection , optics , channel spacing , multiplexing , physics , local oscillator , quadrature amplitude modulation , keying , bit error rate , wavelength , computer science , channel (broadcasting) , telecommunications , phase noise , laser

We experimentally investigate digital intra-channel nonlinear impairment compensation and inter-channel crosstalk suppression for 4 × 160.8-Gb/s wavelength division multiplexing (WDM) polarization division multiplexing quadrature phase shift keying (PDM-QPSK) transmission over 1300-km single-mode fiber-28 (SMF-28) on a 50-GHz grid with the spectral efficiency of 3.21b/s/Hz, adopting simplified heterodyne coherent detection. By using nonlinear compensation based on DBP with crosstalk suppression based on post filter and maximum likelihood sequence estimation (PF&MLSE), the BER has been improved from 1.0 × 10(-3) to 3.5 × 10(-4) for 4 × 160.8Gb/s WDM PDM-QPSK with heterodyne detection after 1300km SMF-28 transmission.

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