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IEEE Journal of Lightwave Technology
Volume 18 Number 3, March 2000

Table of Contents for this issue

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Gain Stabilization in Gain Clamped EDFA Cascades Fed by WDM Burst-Mode Packet Traffic

Miroslav Karásek, Alberto Bononi, Member, IEEE Leslie A. Rusch, Member, IEEE, Member, OSA and Mourad Menif Student Member, IEEE

Page 308.

Abstract:

This paper studies via simulation the stabilizing effect of all-optical gain-clamping (AOGC) in a chain of erbium-doped fiber amplifiers (EDFA) fed by wavelength-division multiplexing (WDM) burst-mode packet traffic. AOGC is necessary to suppress swings of output power and optical signal-to-noise ratio (OSNR). A case study is selected, in which only the first EDFA in a cascade of six amplifiers is clamped using a ring laser configuration. A numerical model which solves the transcendental equation for the average inversion at each EDFA is used for the analysis. The traffic is generated on the eight WDM channels by ON-OFF time-slotted sources, with statistically independent ON and OFF durations, randomly generated by a truncated Pareto distribution with infinite variance. The simulation model includes the generation of amplified spontaneous emission within each amplifier and the propagation of the lasing power generated in the AOGC EDFA through the cascade. It is shown that the sizable power and OSNR swings arising in an unclamped cascade of EDFA's can be effectively suppressed when a lasing signal a few decibels above the aggregate signal power develops in the AOGC EDFA and propagates along the cascade.

References

  1. A. K. Srivastava, Y. Sun, J. L. Zyskind, J. W. Sulhoff, C. Wolf and R. W. Tkach, "Fast gain control in an erbium-doped fiber amplifier", in Proc. Optic. Amp. Appl., Monterey, CA, 1996, p.  paper PDP4. 
  2. A. K. Srivastava, Y. Sun, J. L. Zyskind and J. W. Sulhoff, "EDFA transient response to channel loss in WDM transmission system", IEEE Photon. Technol. Lett., vol. 9, pp.  386-388, 1997.
  3. J. L. Zyskind, A. K. Srivastava, Y. Sun, J. C. Ellson, G. W. Newsome, R. W. Tkach, A. R. Chraplyvy, J. W. Sulhoff, T. A. Strasser, J. R. Pedrazzani and C. Wolf, "Fast link control protectio for surviving channels in multiwavelength otical networks", in Proc. Eur. Conf. Opt. Commun., Oslo, Norway, 1996, p.  paper ThC.3.6. 
  4. H. Dai, J. Y. Pan and C. Lin, "All-optical gain control of in-line erbium-doped fiber amplifiers for hybrid analog/digital WDM systems", IEEE Photon. Technol. Lett., vol. 9, pp.  737-739, 1997.
  5. D. H. Richards, J. L. Jackel and M. A. Ali, "Multichannel EDFA chain control: A comparison of two all-optical approaches", IEEE Photon. Technol. Lett., vol. 10, pp.  156-158, 1998.
  6. J. F. Massicott, S. D. Willson, R. Wyatt, J. R. Armitage, R. Kashyap and D. Williams, "1480 nm pumped erbium doped fiber amplifiere with all-optical automatic gain control", Electron. Lett., vol. 30, pp.  962-964, 1994.
  7. J. L. Zyskind, A. K. Srivastava, Y. Sun, J. C. Ellson, G. W. Newsome, R. W. Tkach, A. R. Chraplyvy, J. W. Sulhoff, T. A. Strasser, J. R. Pedrazzani and C. Wolf, "Fast link control protection for surviving channels in multiwavelength otical networks", in Proc. Eur. Conf. Opt. Commun., Oslo, Norway, 1996, p.  Paper ThC.3.6. 
  8. W. E. Leland, M. S. Taqqu, W. Wilinger and D. V. Wilson, "On the self-similar nature of ethernet traffic (extended version)", IEEE/ACM Trans. Networking, vol. 2, pp.  1-15, 1994 .
  9. J. Beran, R. Sherman, M. S. Taqqu and D. V. Wilinger, "(l)ong-range dependence in variable-bit-rate video traffic", IEEE Trans. Commun., vol. 43, pp.  1566-1579, 1995.
  10. A. Bononi, L. Tanc ˘evski and L. A. Rusch, "Large power swings in doped-fiber amplifiers with highly variable data", IEEE Photon. Technol. Lett., vol. 10, pp.  131-133, 1998.
  11. L. Tanc ˘evski, A. Bononi and L. A. Rusch, "Output power and SNR swings in cascades of EDFA's for circuit-and packet-switched optical networks", J. Lightwave Technol., vol. 17, pp.  733-742, 1999.
  12. A. Bonini and L. A. Rusch, "Doped-fiber amplifier dynamics: A system perspective", J. Lightwave Technol., vol. 16, pp.  945-956, 1998.
  13. M. Rochette, M. Guy, S. LaRochelle, J. Lauzon and F. Trépanier, "Gain equalization of EDFAs' with Bragg gratings", IEEE Photon. Technol. Lett., vol. 11, pp.  536-538,  1999.