Mitigation of Fiber Nonlinearity Using a Digital Coherent Receiver

Coherent detection with receiver-based DSP has recently enabled the mitigation of fiber nonlinear effects. We investigate the performance benefits available from the backpropagation algorithm for polarization division multiplexed quadrature amplitude phase-shift keying (PDM-QPSK) and 16-state quadrature amplitude modulation (PDM-QAM16). The performance of the receiver using a digital backpropagation algorithm with varying nonlinear step size is characterized to determine an upper bound on the suppression of intrachannel nonlinearities in a single-channel system. The results show that for the system under investigation PDM-QPSK and PDM-QAM16 have maximum step sizes for optimal performance of 160 and 80 km, respectively. Whilst the optimal launch power is increased by 2 and 2.5 dB for PDM-QPSK and PDM-QAM16, respectively, the Q-factor is correspondingly increased by 1.6 and 1 dB, highlighting the importance of studying nonlinear compensation for higher level modulation formats.

[1]  P Bayvel,et al.  Experimental investigation of PDM-QAM16 transmission at 112 Gbit/s over 2400 km , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[2]  Curtis R. Menyuk,et al.  Application of multiple-length-scale methods to the study of optical fiber transmission , 1999 .

[3]  Gerhard Kramer,et al.  Capacity limits of information transport in fiber-optic networks. , 2008, Physical review letters.

[4]  Koichi Ishihara,et al.  Multi-staged nonlinear compensation in coherent receiver for 12 015 km WDM transmission of 10-ch x 111 Gbit/s no-guard-interval co-OFDM , 2009 .

[5]  S. Savory,et al.  Blind Equalization and Carrier Phase Recovery in a 16-QAM Optical Coherent System , 2009, Journal of Lightwave Technology.

[6]  Seb J. Savory.  Optimum electronic dispersion compensation strategies for nonlinear transmission , 2006 .

[7]  Seb J Savory,et al.  Digital filters for coherent optical receivers. , 2008, Optics express.

[8]  Andrew J. Viterbi,et al.  Nonlinear estimation of PSK-modulated carrier phase with application to burst digital transmission , 1983, IEEE Trans. Inf. Theory.

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

[10]  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.

[11]  Polina Bayvel,et al.  Experimental and numerical investigation of bit-wise phase-control OTDM transmission. , 2008, Optics express.

[12]  Robert Boorstyn,et al.  Single tone parameter estimation from discrete-time observations , 1974, IEEE Trans. Inf. Theory.

[13]  S. Bigo,et al.  72×100Gb/s transmission over transoceanic distance, using large effective area fiber, hybrid Raman-Erbium amplification and coherent detection , 2009, 2009 Conference on Optical Fiber Communication - incudes post deadline papers.

[14]  Heinz Unbehauen,et al.  Structure identification of nonlinear dynamic systems - A survey on input/output approaches , 1990, Autom..

[15]  D. Marcuse,et al.  Application of the Manakov-PMD equation to studies of signal propagation in optical fibers with randomly varying birefringence , 1997 .

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

[17]  S. Makovejs,et al.  Novel Method of Generating QAM-16 Signals at 21.3 Gbaud and Transmission Over 480 km , 2010, IEEE Photonics Technology Letters.

[18]  M. Magarini,et al.  Spectrally Efficient Long-Haul Optical Networking Using 112-Gb/s Polarization-Multiplexed 16-QAM , 2010, Journal of Lightwave Technology.

[19]  A. Maradudin,et al.  The Baker‐Hausdorff Formula and a Problem in Crystal Physics , 1962 .

[20]  Chongjin Xie.  Suppression of inter-channel nonlinearities in WDM coherent PDMQPSK systems using periodic-group-delay dispersion compensators , 2009, 2009 35th European Conference on Optical Communication.

[21]  Govind P. Agrawal,et al.  Nonlinear Fiber Optics , 1989 .

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

[23]  S. Makovejs,et al.  Experimental comparison of nonlinear compensation in long-haul PDM-QPSK transmission at 42.7 and 85.4 Gb/s , 2009, 2009 35th European Conference on Optical Communication.

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

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