Nonlinearity Limitations When Mixing 40-Gb/s Coherent PDM-QPSK Channels With Preexisting 10-Gb/s NRZ Channels |
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| Authors: | Bertran-Pardo O. Renaudier J. Charlet G. Mardoyan H. Tran P. Bigo S. |
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| Affiliation: | Alcatel-Lucent Bell Labs., Nozay; |
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| Abstract: | We investigate the penalties onto a 40-Gb/s polarization-division-multiplexing (PDM)-quadrature phase-shift keying caused by PDM, wavelength-division multiplexing and 10-Gb/s nonreturn-to-zero neighbor channels. Besides, we optimize the carrier phase estimation process and introduce bandgaps in the multiplex in order to contain limitations caused by cross nonlinear effects. |
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