Abstract

A novel family of optical line codes to counteract the effects of a dispersive fiber is presented. The performance of the first code in the family, referred to as order-1 code, is analytically evaluated and compared to that of the duobinary and phased amplitude-shift signaling (PASS) codes,which are a modified form of duobinary proposed by Stark <etal> The order-1 line code turns out to be very robust to chromatic dispersion and, for a given penalty, allows the bridging of a distance 1.5 times (or more) greater than duobinary. The novel family of codes was conceived by exploiting the finding that, approximately, a very dispersive fiber turns an input pulse into the form of its Fourier transform seen in the time domain. Higher-order codes allow the bridging of larger distances if combined with appropriate chirping.

© 2001 IEEE

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J. Lightwave Technol. (1)

A. F. Elrefaie, R. E. Wagner, D. A. Atlas and D. G. Daut, "Chromatic dispersion limitations in coherent lightwave transmission systems", J. Lightwave Technol., vol. 6, pp. 704-709, May 1988.

Other (17)

S. W. Golomb, Shift Register Sequences, San Francisco, CA: Holden-Day, 1967.

J. B. Stark, J. E. Mazo and R. Laroia, "Line coding for dispersion tolerance and spectral efficiency: Duobinary and beyond", in Proc. OFC'99, vol. WM46-1, 1999, pp. 331-333.

A. J. Price and N. Le Mercier, "Reduced bandwidth optical digital intensity modulation with improved chromatic dispersion tolerance", Electron. Lett., vol. 31, pp. 58-59, Jan. <day>5</day>, 1995.

K. Yonenaga, S. Kuwano, S. Norimatsu and N. Shibata, "Optical duobinary transmission system with no receiver sensitivity degradation", Electron. Lett., vol. 31, pp. 302-304, Feb. <day>16</day>, 1995.

S. Kuwano, K. Yonenaga and K. Iwashita, "10 Gbit/s repetearless transmission experiment of optical duobinary modulated signal", Electron. Lett., vol. 31, pp. 1359-1361, Aug. <day>3</day>, 1995.

A. J. Price, L. Pierre, R. Uhel and V. Havard, "210-km repetearless 10-Gbit/s transmission experiment through nondispersion-shifted fiber using partial response scheme", IEEE Photon. Technol. Lett., vol. 71, pp. 1219 -1221, Oct. 1995.

L. Pierre, J. P. Thiery and D. Penninckx, "243 km, 10 Gbit/s transmission experiment through standard fiber and impact of self-phase modulation using partial response scheme", Electron. Lett., vol. 32, pp. 673-674, Mar. <day>28</day>, 1996.

D. Penninckx, L. Pierre, J.-P. Thiery, B. Clesca, M. Chbat and J.-L. Beylat, "Relation between spectrum bandwidth and the effects of chromatic dispersion in optical transmissions", Electron. Lett., pp. 1023-1024, May <day>23</day>, 1996.

D. Penninckx, M. Chbat, L. Pierre and J.-P. Thiery, "The phase-shaped binary transmission (PSBT): A new technique to transmit far beyond the chromatic dispersion limit", IEEE Photon. Technol. Lett., vol. 9, pp. 259-261, Feb. 1997.

S. Walklin and J. Conradi, "On the relationship between chromatic dispersion and transmitter filter response in duobinary optical communication systems", IEEE Photon. Technol. Lett., vol. 9, pp. 1005 -1007, July 1997.

K. Yonenaga and S. Kuwano, "Dispersion-tolerant optical transmission system using duobinary transmitter and binary receiver", J. Lightwave Technol. , pp. 1530-1537, Aug. 1997.

S. Walklin and J. Conradi, "Multilevel signaling for increasing the reach of 10 Gb/s lightwave systems", J. Lightwave Technol., pp. 2235-2248, Nov. 1999.

E. Forestieri and G. Prati, "Improved new optical line code", Patent pending, 2000.

E. Forestieri, "Evaluating the error probability in lightwave systems with chromatic dispersion, arbitrary pulse shape and pre-and post-detection filtering", J. Lightwave Technol., pp. 1493-1503, Nov. 2000.

S. Benedetto, E. Biglieri and V. Castellani, Digital Transmission Theory, London: U.K.: Prentice-Hall, 1987.

D. Slepian and H. O. Pollak, "Prolate spheroidal wave functions, Fourier analysis and uncertainty-I", Bell System Tech. J., vol. 40, pp. 43-64, Jan. 1961.

H. J. Landau and H. O. Pollak, "Prolate spheroidal wave functions, Fourier analysis and uncertainty-II", Bell System Tech. J., vol. 40, pp. 65-84, Jan. 1961.

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