A nonlinearity-tolerant frequency domain root M-shaped pulse for coherent optical communication systems | Zendy

Xian Xu | Zendy; Qunbi Zhuge | Zendy; Benoît Châtelain | Zendy; Mohamed Morsy-Osman | Zendy; Mathieu Chag | Zendy; Meng Qiu | Zendy; David V. Plant | Zendy

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A nonlinearity-tolerant frequency domain root M-shaped pulse for coherent optical communication systems

Author(s) -

Xian Xu,

Qunbi Zhuge,

Benoît Châtelain,

Mohamed Morsy-Osman,

Mathieu Chag,

Meng Qiu,

David V. Plant

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.21.031966

Subject(s) - optics , pulse shaping , physics , polarization division multiplexing , multiplexing , quadrature amplitude modulation , phase shift keying , wavelength division multiplexing , wavelength , telecommunications , channel (broadcasting) , bit error rate , computer science , laser

A new intersymbol interference (ISI)-free nonlinearity-tolerant frequency domain root M-shaped pulse (RMP) is derived for dispersion unmanaged coherent optical transmission systems. Beginning with the relationship between pulse shaping and intra-channel nonlinearity effects, we derive closed-form expressions for the proposed pulse. Experimental demonstrations reveal that by employing the proposed pulse at a roll-off factor of 1, the maximum transmission reach of a single-channel 56 Gb/s polarization-division-multiplexed quadrature phase-shift keying (PDM-QPSK) system can be extended by 33% and 17%, when compared to systems using a root raised cosine (RRC) pulse and a root optimized pulse (ROP), respectively. For a single-channel 128 Gb/s polarization-division-multiplexed 16-quadrature amplitude modulation (PDM-16QAM) system, the reach can be extended by 44% and 18%, respectively. Reach increases of 30% and 13% are also observed for a dense wavelength-division multiplexing (DWDM) 504 Gb/s PDM-QPSK transmission system. The tolerance to narrow filtering effect for the three pulses is experimentally studied as well.

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