Pseudolinear optical system reach enhancement via runlength-limited coding

This paper demonstrates that the transmission distance of an ON-OFF-keyed high-speed pseudolinear optical communication system can be dramatically improved by means of runlength-limited coding. The key idea is to impose constraints on transmitted sequences such that the minimum interpulse spacing increases, and the average transmission power decreases. Both effects help suppress intrachannel four-wave mixing, a major nonlinear penalty in pseudolinear long-haul links. Several coding schemes with different properties are designed for various constraints and compared against a prototypical reference system. Finally, numerical simulations are performed for a benchmark system employing differential phase-shift keying. The results obtained indicate that the runlength-limited coding approach can be considered a legitimate alternative to this more advanced modulation format.

[1]  A.H. Gnauck,et al.  Optical phase-shift-keyed transmission , 2005, Journal of Lightwave Technology.

[2]  V. Pechenkin,et al.  Ghost Pulse Suppression in Quasi-Linear Optical Data Transmission Systems via Constrained Coding , 2006, 23rd Biennial Symposium on Communications, 2006.

[3]  Kees A. Schouhamer Immink.  A practical method for approaching the channel capacity of constrained channels , 1997, IEEE Trans. Inf. Theory.

[4]  Alexander V. Shafarenko,et al.  Information-Theory Analysis of Skewed Coding for Suppression of Pattern-Dependent Errors in Digital Communications , 2007, IEEE Transactions on Communications.

[5]  B. Vasic,et al.  Suppression of intrachannel nonlinear effects using pseudoternary constrained codes , 2006, Journal of Lightwave Technology.

[6]  Kees Schouhamer-Immink.  Coding Techniques for Digital Recorders , 1991 .

[7]  Paul H. Siegel,et al.  Recording codes for digital magnetic storage , 1985 .

[8]  B. Vasic,et al.  Ghost-pulse reduction in 40-Gb/s systems using line coding , 2004, IEEE Photonics Technology Letters.

[9]  V. Pechenkin,et al.  Higher bit rates for quasi-linear optical data transmission systems via constrained coding , 2006, 2006 Optical Fiber Communication Conference and the National Fiber Optic Engineers Conference.

[10]  P. Humblet,et al.  On the bit error rate of lightwave systems with optical amplifiers , 1991 .

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

[12]  D. Marcuse.  Derivation of analytical expressions for the bit-error probability in lightwave systems with optical amplifiers , 1990 .

[13]  A. Mecozzi,et al.  Analysis of intrachannel nonlinear effects in highly dispersed optical pulse transmission , 2000, IEEE Photonics Technology Letters.

[14]  S. Kumar.  Intrachannel four-wave mixing in dispersion managed RZ systems , 2001, IEEE Photonics Technology Letters.

[15]  I. Djordjevic,et al.  Constrained coding techniques for the suppression of intrachannel nonlinear effects in high-speed optical transmission , 2006, Journal of Lightwave Technology.

[16]  G.C. Papen,et al.  Sequence estimation with run-length coding for VCSEL-based multimode fiber links , 2005, (CLEO). Conference on Lasers and Electro-Optics, 2005..

[17]  John M. Cioffi,et al.  Sliding-Block Line Codes to Increase Dispersion-Limited Distance of Optical Fiber Channels , 1995, IEEE J. Sel. Areas Commun..

[18]  I.B. Djordjevic,et al.  An Improved Technique for Suppression of Intrachannel Four-Wave Mixing in 40-Gb/s Optical Transmission Systems , 2007, IEEE Photonics Technology Letters.

[19]  Ivan B. Djordjevic,et al.  Rate 2/3 modulation code for suppression of intrachannel nonlinear effects in high-speed optical transmission , 2006 .

[20]  S.K. Turitsyn,et al.  Reduction of nonlinear intrachannel effects by channel asymmetry in transmission lines with strong bit overlapping , 2003, IEEE Photonics Technology Letters.

[21]  S. Banerjee,et al.  /spl pi//2 alternate-phase ON-OFF keyed 40-Gb/s transmission on standard single-mode fiber , 2003, IEEE Photonics Technology Letters.

[22]  Gabriel Charlet,et al.  Improvement of tolerance to nonlinearities resulting from small sequence modifications in 40 Gbit/s optical transmission , 2006, 2006 European Conference on Optical Communications.

[23]  Toshihiko Hirooka,et al.  Resonant intrachannel pulse interactions in dispersion-managed transmission systems , 2002 .

[24]  V. Pechenkin,et al.  Constrained Coding for Quasi-Linear Optical Data Transmission Systems , 2006, Journal of Lightwave Technology.

[25]  F. R. Kschischang,et al.  Constrained Coding for WDM Systems , 2006, 2006 European Conference on Optical Communications.

[26]  Douglas Lind,et al.  An Introduction to Symbolic Dynamics and Coding , 1995 .

[27]  Peter J. Winzer,et al.  Optimum filter bandwidths for optically preamplified NRZ receivers , 2001 .

[28]  M. Forzati,et al.  Reduction of intrachannel four-wave mixing using the alternate-phase RZ modulation format , 2002, IEEE Photonics Technology Letters.

[29]  A. Berntson,et al.  Generation and dynamics of ghost pulses in strongly dispersion-managed fiber-optic communication systems. , 2001, Optics letters.

[30]  Xiang Liu,et al.  Suppression of intrachannel four-wave-mixing induced ghost pulses in high-speed transmissions by phase inversion between adjacent marker blocks. , 2002, Optics letters.

[31]  Brian H. Marcus,et al.  Finite-State Modulation Codes for Data Storage , 2004 .

[32]  Shizhong Xie,et al.  Suppression of ghost pulses in 40Gbps optical transmission systems with fixed-pattern phase modulation. , 2005, Optics express.

[33]  Paul H. Siegel,et al.  Coding for the optical channel: the ghost-pulse constraint , 2005, IEEE Transactions on Information Theory.