Analytical results on back propagation nonlinear compensator with coherent detection.

We derive analytic formulas for the improvement in effective optical signal-to-noise ratio brought by a digital nonlinear compensator for dispersion uncompensated links. By assuming Gaussian distributed nonlinear noise, we are able to take both nonlinear signal-to-signal and nonlinear signal-to-noise interactions into account. In the limit of weak nonlinear signal-to-noise interactions, we derive an upper boundary of the OSNR improvement. This upper boundary only depends on fiber parameters as well as on the total bandwidth of the considered wavelength-division multiplexing (WDM) signal and the bandwidth available for back propagation. We discuss the dependency of the upper boundary on different fiber types and also the OSNR improvement in practical system conditions. Furthermore, the analytical formulas are validated by numerical simulations.

[1]  Takeshi Hoshida,et al.  Systematic analysis on multi-segment dual-polarisation nonlinear compensation in 112 Gb/s DP-QPSK coherent receiver , 2009, 2009 35th European Conference on Optical Communication.

[2]  T. Tanimura,et al.  112 Gb/s DP-QPSK transmission using a novel nonlinear compensator in digital coherent receiver , 2009, 2009 Conference on Optical Fiber Communication - incudes post deadline papers.

[3]  R I Killey,et al.  Mitigation of Fiber Nonlinearity Using a Digital Coherent Receiver , 2010, IEEE Journal of Selected Topics in Quantum Electronics.

[4]  E. Ip,et al.  Nonlinear Compensation Using Backpropagation for Polarization-Multiplexed Transmission , 2010, Journal of Lightwave Technology.

[5]  Xi Chen,et al.  Closed-form expressions for nonlinear transmission performance of densely spaced coherent optical OFDM systems. , 2010, Optics express.

[6]  Takeshi Hoshida,et al.  Experimental characterization of nonlinearity mitigation by digital back propagation and nonlinear polarization crosstalk canceller under high PMD condition , 2011, 2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference.

[7]  D. Rafique,et al.  Impact of signal-ASE four-wave mixing on the effectiveness of digital back-propagation in 112 Gb/s PM-QPSK systems. , 2011, Optics express.

[8]  E. Torrengo,et al.  Experimental validation of an analytical model for nonlinear propagation in uncompensated optical links , 2011, 2011 37th European Conference and Exhibition on Optical Communication.

[9]  A. Carena,et al.  Analytical results on channel capacity in uncompensated optical links with coherent detection , 2011, 2011 37th European Conference and Exhibition on Optical Communication.

[10]  P. Poggiolini,et al.  Analytical Modeling of Nonlinear Propagation in Uncompensated Optical Transmission Links , 2011, IEEE Photonics Technology Letters.

[11]  G. Bosco,et al.  Modeling of the Impact of Nonlinear Propagation Effects in Uncompensated Optical Coherent Transmission Links , 2012, Journal of Lightwave Technology.

[12]  Takahito Tanimura,et al.  Analytical results on back propagation nonlinear compensator in coherent transmission systems , 2012, 2012 38th European Conference and Exhibition on Optical Communications.

[13]  W. Shieh,et al.  Limitation of fiber nonlinearity compensation using digital back propagation in the presence of PMD , 2012, OFC/NFOEC.