Abstract

We introduce a novel transmission technique of periodic in-line all-optical format conversion between return-to-zero and non-return-to-zero-like aimed at delaying the accumulation of format-specific impairments. A particular realization of this approach using in-line normal dispersion fibre-enhanced nonlinear optical loop mirrors at 40Gbit/s data rate is presented.

© 2004 Optical Society of America

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References

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  1. F. Forghieri, R. W. Tkach, and A. R. Chraplyvy, �??Fiber nonlinearities and their impact on transmission systems,�?? in Optical Fiber Telecommunications IIIA, I. P. Kaminow and T. L. Koch, eds. (Academic, San Diego, Calif., 1997), pp. 196-264.
  2. L. F. Mollenauer, J. P. Gordon, and P. V. Mamyshev, �??Solitons in high bit-rate, long-distance transmission,�?? in Optical Fiber Telecommunications IIIA, I. P. Kaminow and T. L. Koch, eds. (Academic, San Diego, Calif., 1997), pp. 373-460.
  3. E. Iannone, F. Matera, A. Mecozzi, and M. Settembre, Nonlinear Optical Communication Networks (JohnWiley & Sons, 1998).
  4. R. J. Essiambre, G. Raybon, and B. Mikkelsen, �??Pseudo-linear transmission of high-speed TDM signals: 40 and 160Gb/s,�?? in Optical Fiber Telecommunications IVB, I. P. Kaminow and T. Li, eds. (Academic, New Jersey, 2002), pp. 232-304.
  5. D. Breuer and K. Petermann, �??Comparison of NRZ- and RZ- modulation format for 40Gbit/s TDM standard-fiber systems,�?? IEEE Photon. Technol. Lett. 9, 398-400 (1997).
    [CrossRef]
  6. S. -G. Park, A. H. Gnauck, J. M. Wiesenfeld, and L. D. Garrett, �??40-Gb/s transmission over multiple 120-km spans of conventional single-mode fiber using highly dispersed pulses,�?? IEEE Photon. Technol. Lett. 12, 1085-1087 (2000).
    [CrossRef]
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  8. A. Mecozzi, C. B. Clausen, and M. Shtaif, �??Analysis of intrachannel nonlinear effects in highly dispersed optical pulse transmission,�?? IEEE Photon. Technol. Lett. 12, 392-394 (2000).
    [CrossRef]
  9. K. S. Cheng and J. Conradi, �??Reduction of pulse-to-pulse interaction using alternative RZ formats in 40-Gb/s system,�?? IEEE Photon. Technol. Lett. 14, 98-100 (2002).
    [CrossRef]
  10. X. Liu, X. Wei, A. H. Gnauck, C. Xu, and I. K. Wickham, �??Suppression of intrachannel four-wave-mixing-induced ghost pulses in high-speed transmission by phase inversion between adjacent marker blocks,�?? Opt. Lett. 27, 1177-1179 (2002).
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  11. A. V. Kanaev, G. G. Luther, V. Kovanis, S. R. Bickham, and J. Conradi, �??Ghost-pulse generation suppression in phase-modulated 40-Gb/s RZ transmission,�?? J. Lightwave Technol. 21, 1486-1489 (2003).
    [CrossRef]
  12. S. Boscolo, S. K. Turitsyn, and K. J. Blow, �??Study of the operating regime for all-optical passive 2R regeneration of dispersion-managed RZ data at 40Gbit/s using in-line NOLMs,�?? IEEE Photon. Technol. Lett. 14, 30-32 (2002).
    [CrossRef]
  13. S. Boscolo, S. K. Turitsyn, and K. J. Blow, �??All-optical passive quasi-regeneration in transoceanic 40Gbit/s return-to-zero transmission systems with strong dispersion management,�?? Opt. Commun. 205, 277-280 (2002).
    [CrossRef]
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    [CrossRef]
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    [CrossRef]
  17. M. Suzuki, H. Toda, A. H. Liang, and A. Asegawa, �??Improvement of amplitude and phase margins in an RZ optical receiver using Kerr nonlinearity in normal dispersion fiber,�?? IEEE Photon. Technol. Lett. 13, 1248-1250 (2001).
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  19. S. Boscolo, J. H. B. Nijhof, and S. K. Turitsyn, �??Autosoliton transmission in dispersion-managed systems guided by in-line nonlinear optical loop mirrors,�?? Opt. Lett. 25, 1240-1242 (2000).
    [CrossRef]

IEEE J. Sel. Top. Quantum Electron. (1)

S. Bigo, O. Leclerc, and E. Desurvire, �??All-optical fiber signal processing and regeneration for soliton communications,�?? IEEE J. Sel. Top. Quantum Electron. 3, 1208-1222 (1997).
[CrossRef]

IEEE Photon. Technol. Lett. (7)

L. Xu, B. C. Wang, V. Baby, I. Glesk, and P. R. Prucnal, �??All-optical data format conversion between RZ and NRZ based on a Mach-Zehnder interferometric wavelength converter,�?? IEEE Photon. Technol. Lett. 15, 308-310 (2003).
[CrossRef]

M. Suzuki, H. Toda, A. H. Liang, and A. Asegawa, �??Improvement of amplitude and phase margins in an RZ optical receiver using Kerr nonlinearity in normal dispersion fiber,�?? IEEE Photon. Technol. Lett. 13, 1248-1250 (2001).
[CrossRef]

D. Breuer and K. Petermann, �??Comparison of NRZ- and RZ- modulation format for 40Gbit/s TDM standard-fiber systems,�?? IEEE Photon. Technol. Lett. 9, 398-400 (1997).
[CrossRef]

S. -G. Park, A. H. Gnauck, J. M. Wiesenfeld, and L. D. Garrett, �??40-Gb/s transmission over multiple 120-km spans of conventional single-mode fiber using highly dispersed pulses,�?? IEEE Photon. Technol. Lett. 12, 1085-1087 (2000).
[CrossRef]

A. Mecozzi, C. B. Clausen, and M. Shtaif, �??Analysis of intrachannel nonlinear effects in highly dispersed optical pulse transmission,�?? IEEE Photon. Technol. Lett. 12, 392-394 (2000).
[CrossRef]

K. S. Cheng and J. Conradi, �??Reduction of pulse-to-pulse interaction using alternative RZ formats in 40-Gb/s system,�?? IEEE Photon. Technol. Lett. 14, 98-100 (2002).
[CrossRef]

S. Boscolo, S. K. Turitsyn, and K. J. Blow, �??Study of the operating regime for all-optical passive 2R regeneration of dispersion-managed RZ data at 40Gbit/s using in-line NOLMs,�?? IEEE Photon. Technol. Lett. 14, 30-32 (2002).
[CrossRef]

J. Lightwave Technol (1)

A. V. Kanaev, G. G. Luther, V. Kovanis, S. R. Bickham, and J. Conradi, �??Ghost-pulse generation suppression in phase-modulated 40-Gb/s RZ transmission,�?? J. Lightwave Technol. 21, 1486-1489 (2003).
[CrossRef]

J. Opt. Soc. Am. B (1)

Opt. Commun. (1)

S. Boscolo, S. K. Turitsyn, and K. J. Blow, �??All-optical passive quasi-regeneration in transoceanic 40Gbit/s return-to-zero transmission systems with strong dispersion management,�?? Opt. Commun. 205, 277-280 (2002).
[CrossRef]

Opt. Lett. (3)

Optical Fiber Telecommunications IIIA (2)

F. Forghieri, R. W. Tkach, and A. R. Chraplyvy, �??Fiber nonlinearities and their impact on transmission systems,�?? in Optical Fiber Telecommunications IIIA, I. P. Kaminow and T. L. Koch, eds. (Academic, San Diego, Calif., 1997), pp. 196-264.

L. F. Mollenauer, J. P. Gordon, and P. V. Mamyshev, �??Solitons in high bit-rate, long-distance transmission,�?? in Optical Fiber Telecommunications IIIA, I. P. Kaminow and T. L. Koch, eds. (Academic, San Diego, Calif., 1997), pp. 373-460.

Optical Fiber Telecommunications IVB (1)

R. J. Essiambre, G. Raybon, and B. Mikkelsen, �??Pseudo-linear transmission of high-speed TDM signals: 40 and 160Gb/s,�?? in Optical Fiber Telecommunications IVB, I. P. Kaminow and T. Li, eds. (Academic, New Jersey, 2002), pp. 232-304.

Phys. Rev. Lett. (1)

H. Nakatsuka, D. Grischkowsky, and A. C. Balant, �??Nonlinear picosecond-pulse propagating through optical fibers with positive group velocity dispersion,�?? Phys. Rev. Lett. 47, 910-913 (1981).
[CrossRef]

Other (1)

E. Iannone, F. Matera, A. Mecozzi, and M. Settembre, Nonlinear Optical Communication Networks (JohnWiley & Sons, 1998).

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Figures (5)

Fig. 1.
Fig. 1.

Schematic diagram of one element of the periodic transmission system.

Fig. 2.
Fig. 2.

Pulse shapes at the input and ouptut of the NDF-NOLM pulse processor.

Fig. 3.
Fig. 3.

Evolution of the stationary pulse width (left, upper curve), chirp (left, lower curve), and bandwidth (right) over one period of the system.

Fig. 4.
Fig. 4.

Eye-diagrams in the NDF-NOLM signal processor.

Fig. 5.
Fig. 5.

Q-factor at the NDF-NOLM signal processor output versus the span average dispersion of the second cell of the system period.

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