Wednesday, 21 September, 2011
09:00 -- 10:45
Room B

We.7.B • Nonlinear Transmission I

Chair: Joerg-Peter Elbers; ADVA AG Optical Networking, Germany

We.7.B.1 • 09:00
Experimental characterization of Gaussian-distributed nonlinear distortions
Francesco Vacondio1, Christian Simonneau1, Laurence Lorcy1, Jean-Christophe Antona1, Alberto Bononi2, Sebastien Bigo1; 1Alcatel Lucent Bell Labs, France; 2Università degli Studi di Parma, Italy.
We show that in dispersion-uncompensated 100G systems Kerr nonlinearity is akin to additive Gaussian noise. Its variance grows as a power of propagation distance, and represents 1/3 of total noise variance at optimal channel power
We.7.B.2 • 09:15
Experimental Validation of an Analytical Model for Nonlinear Propagation in Uncompensated Optical Links
Enrico Torrengo1, Roberto Cigliutti1, Gabriella Bosco1, Andrea Carena1, Vittorio Curri1, Pierluigi Poggiolini1, Antonino Nespola2, Dario Zeolla2, Fabrizio Forghieri3; 1Politecnico di Torino, Italy; 2Istituto Superiore Mario Boella, Italy; 3Cisco Systems, Italy.
We present an experimental validation over different fiber types of an analytical model for nonlinear propagation in uncompensated optical transmission links. An ultra-dense WDM scenario was analyzed, transmitting a comb of ten 120-Gb/s PM-QPSK signals.
We.7.B.3 • 09:30
Analytical Results on Channel Capacity in Uncompensated Optical Links with Coherent Detection
Gabriella Bosco1, Pierluigi Poggiolini1, Andrea Carena1, Vittorio Curri1, Fabrizio Forghieri2; 1Politecnico di Torino, Italy; 2Cisco Systems, Italy.
We derive capacity formulas for uncompensated links, showing that the launch power maximizing capacity is independent of link length and modulation format. We discuss the usable range of PM-QAM systems and validate analysis with simulations.
We.7.B.4 • 09:45
Modeling Nonlinearity in Coherent Transmissions with Dominant Interpulse-Four-Wave-Mixing
Alberto Bononi1, Edouard Grellier2, Paolo Serena1, Nicola Rossi1, Francesco Vacondio2; 1Universita' di Parma, Italy; 2Alcatel Lucent Bell Labs, France.
We provide a new analytical model to predict the nonlinear interference coefficient and the nonlinear threshold in coherent transmissions with dominant single-channel IFWM.
We.7.B.5 • 10:00
Polarization Scattering by Intra-Channel Collisions in Phase-Modulated Transmission
Antonio Mecozzi1, Francesco Matera2; 1Electrical and Information Engineering, University of L'Aquila, Italy; 2Fondazione Ugo Bordoni, Italy.
We show that polarization modulated and polarization multiplexed transmission may be significantly impaired by polarization scattering induced by intra-channel cross-phase modulation. In polarization multiplexed transmission, channel interleaving may be used to mitigate the effect.
We.7.B.6 • 10:15
Fiber Nonlinearities in 16QAM Transmission Systems
Chongjin Xie1; 1Bell Labs, Alcatel-Lucent, USA.
Nonlinear effects in 28-Gbaud 16QAM transmission with and without inline dispersion compensation are studied. We find that SPM and XPM induced nonlinear phase distortions significantly degrade the performance of 16QAM transmission with inline dispersion compensation.
We.7.B.7 • 10:30
Interplay between PDL and Nonlinear Effects in Coherent Polarization Multiplexed Systems
Olga Vassilieva1, Inwoong Kim1, Youichi Akasaka1, Martin Bouda1, Motoyoshi Sekiya1; 1Fujitsu Laboratories of America, Inc., USA.
 We analyzed the mechanism of the interplay between PDL and fiber nonlinear effects and showed that PDL can generate large data-dependent optical peak power variations that can worsen nonlinear tolerance and cause additional 1.4dB Q-penalty