Efficient compensation of inter-channel nonlinear effects via digital backward propagation in WDM optical transmission.

An advanced split-step method is employed for the digital backward-propagation (DBP) method using the coupled nonlinear Schrodinger equations for the compensation of inter-channel nonlinearities. Compared to the conventional DBP, cross-phase modulation (XPM) can be efficiently compensated by including the effect of the inter-channel walk-off in the nonlinear step of the split-step method (SSM). While self-phase modulation (SPM) compensation is inefficient in WDM systems, XPM compensation is able to increase the transmission reach by a factor of 2.5 for 16-QAM-modulated signals. The advanced SSM significantly relaxes the step size requirements resulting in a factor of 4 reduction in computational load.

[1]  Guifang Li.  Recent advances in coherent optical communication , 2009 .

[2]  J. Gordon,et al.  Phase noise in photonic communications systems using linear amplifiers. , 1990, Optics letters.

[3]  Guifang Li,et al.  Experimental Demonstration of Fiber Impairment Compensation Using the Split-Step Finite-Impulse-Response Filtering Method , 2008, IEEE Photonics Technology Letters.

[4]  W. Rosenkranz,et al.  Efficient numerical simulation of multichannel WDM transmission systems limited by XPM , 2003, IEEE Photonics Technology Letters.

[5]  Arthur James Lowery,et al.  Fiber nonlinearity pre- and post-compensation for long-haul optical links using OFDM. , 2007, Optics express.

[6]  Partha P. Mitra,et al.  Nonlinear limits to the information capacity of optical fibre communications , 2000, Nature.

[7]  F Forghieri,et al.  Evaluation of the computational effort for chromatic dispersion compensation in coherent optical PM-OFDM and PM-QAM systems. , 2009, Optics express.

[8]  Polina Bayvel,et al.  10.7 Gb/s electronic predistortion transmitter using commercial FPGAs and D/A converters implementing real-time DSP for chromatic dispersion and SPM compensation. , 2009, Optics express.

[9]  M.G. Taylor,et al.  Coherent detection method using DSP for demodulation of signal and subsequent equalization of propagation impairments , 2004, IEEE Photonics Technology Letters.

[10]  R.W. Tkach,et al.  Improving the Nonlinear Tolerance of Polarization-Division-Multiplexed CO-OFDM in Long-Haul Fiber Transmission , 2009, Journal of Lightwave Technology.

[11]  J. Kahn,et al.  Compensation of Dispersion and Nonlinear Impairments Using Digital Backpropagation , 2008, Journal of Lightwave Technology.

[12]  Guifang Li,et al.  Electronic post-compensation of WDM transmission impairments using coherent detection and digital signal processing. , 2008, Optics express.

[13]  Guifang Li,et al.  Compensation of interchannel nonlinearities using enhanced coupled equations for digital backward propagation. , 2009, Applied optics.

[14]  C. Menyuk,et al.  Optimization of the split-step Fourier method in modeling optical-fiber communications systems , 2003 .

[15]  K. Kikuchi.  Electronic post-compensation for nonlinear phase fluctuations in a 1000-km 20-Gbit/s optical quadrature phase-shift keying transmission system using the digital coherent receiver. , 2008, Optics express.

[16]  Fatih Yaman,et al.  Nonlinear Impairment Compensation for Polarization-Division Multiplexed WDM Transmission Using Digital Backward Propagation , 2009 .

[17]  E. Yamazaki,et al.  Compensation of Interchannel Crosstalk Induced by Optical Fiber Nonlinearity in Carrier Phase-Locked WDM System , 2007, IEEE Photonics Technology Letters.

[18]  Fan Zhang,et al.  Electrical post-compensation of intrachannel nonlinearities in 10GBaud coherent QPSK transmission systems , 2009 .

[19]  Guifang Li,et al.  Impact of XPM and FWM on the digital implementation of impairment compensation for WDM transmission using backward propagation. , 2008, Optics express.