Title :
Nonlinearity Limitations When Mixing 40-Gb/s Coherent PDM-QPSK Channels With Preexisting 10-Gb/s NRZ Channels
Author :
Bertran-Pardo, O. ; Renaudier, J. ; Charlet, G. ; Mardoyan, H. ; Tran, P. ; Bigo, S.
Author_Institution :
Alcatel-Lucent Bell Labs., Nozay
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.
Keywords :
nonlinear optics; optical fibre communication; quadrature phase shift keying; wavelength division multiplexing; QPSK; bandgaps; bit rate 10 Gbit/s; bit rate 40 Gbit/s; carrier phase estimation process; cross nonlinear effects; nonreturn-to-zero neighbor channels; polarization-division-multiplexing; quadrature phase-shift keying; wavelength-division multiplexing; Distributed feedback devices; Laser feedback; Optical feedback; Optical fiber polarization; Optical mixing; Optical modulation; Optical signal processing; Phase shift keying; Testing; Wavelength division multiplexing; Coherent detection; cross-nonlinear effects; digital signal processing; optical fiber communications; phase-shift keying;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.926936
