Title :
On XPM Mitigation in WDM Fiber-Optic Systems
Author :
Secondini, Marco ; Forestieri, Enrico
Author_Institution :
Superiore Sant´Anna, Pisa, Italy
Abstract :
The impact and possible mitigation of interchannel nonlinearity is investigated in single-polarization wavelength-division multiplexing systems by evaluating, both analytically and by simulation, the achievable information rate for a Gaussian-modulated channel surrounded by Gaussian- or constant-envelope-modulated channels. Different number of channels, link configurations, and mitigation strategies are considered. It turns out that a Kalman equalizer can be effective in the ideal case of distributed amplification but fails for practical systems with long spans and lumped amplification.
Keywords :
Gaussian channels; equalisers; nonlinear optics; optical fibre networks; optical fibre polarisation; optical links; optical modulation; phase modulation; wavelength division multiplexing; Gaussian-modulated channel; Kalman equalizer; WDM fiber-optic systems; XPM mitigation; channel number; constant-envelope-modulated channels; cross-phase modulation; distributed amplification; information rate; interchannel nonlinearity; link configurations; lumped amplification; single-polarization wavelength-division multiplexing systems; Accuracy; Equalizers; Kalman filters; Modulation; Noise; Time-frequency analysis; Wavelength division multiplexing; Kalman filtering; Optical fiber communication; fiber nonlinearity; information rates; phase noise;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2353217
