Abstract

In this paper, the electrical equalization technique utilized in multimode fiber (MMF) links for 10-Gigabit Ethernet is reported. This paper presents and compares three kinds of equalizers: linear equalizer, decision feedback equalizer (DFE), and a nonlinear finite-impulse-response DFE (NL-FIR-DFE) based on the analysis of nonlinear operations of direct modulation and detection in MMF links. Computer simulations reveal that NL-FIR-DFE exhibits superior performance in comparison with normal DFE. The equalization performance for an MMF channel with bandwidth 500 MHz-km as well as 160 MHz-km is demonstrated. It is demonstrated that with direct modulation of cost-effective vertical-cavity surface-emitting laser (VCSEL) or Fabry-Pérot laser, the transmission distance for installed MMF with a bandwidth of 500 MHz-km at 10 Gb/s can be extended to 300 m with an appropriate offset restricted mode launch condition by utilizing normal DFE and to more than 650 m for NL-FIR-DFE. Moreover, it is shown that the transmission distance for an MMF with a bandwidth of 160 MHz-km can reach 300 m with more than seven times bandwidth improvement by using NL-FIR-DFE.

© 2005 IEEE

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  1. D. G. Cunningham, "The status of the 10-Gigabit ethernet standard", in Proc. Eur. Conf. Optical Communication (ECOC 2001), Amsterdam, The Netherlands, 2001, pp. 364-367.
  2. J. E. George, S. Golowich, P. F. Kolesar, A. J. Ritger and M. Yang, "Laser optimized multimode fibers for short reach 10 Gbps systems", in Proc. Nat. Fiber Optic Engineers Conf. (NFOEC), Jul. 2001, pp. 351-361.
  3. L. B. Aronson, B. E. Lemoff, L. A. Buckman and D. W. Dolfi, "Low cost multimode WDM for local area networks up to 10 Gb/s", IEEE Photon. Technol. Lett., vol. 10, no. 10, pp. 1489-1491, Oct. 1998.
  4. E. J. Tyler, M. Webster, A. Wonfor, R. V. Penty and I. H. White, "Transmission of a single 2.5 Gb/s subcarrier modulated channel over 300 m of 62.5 µ m multimode fiber", in 13th Annu. Meeting Lasers Electro-Optics Society (LEOS 2000), vol. 1, Nov. 2000, pp. 354-355.
  5. M. Webster, "10 Gbit/s transmission over 300 m standard multimode fiber using multilevel coding and 2 channel WDM", in Proc. Conf. Lasers Electro-Optics (CLEO 2000), 2000, pp. 94-95.
  6. H. R. Stuart, "Dispersive multiplexing in multimode fiber", in Optical Fiber Communication Conf. (OFC 2000), Mar. 7-10 2000, pp. 305-307.
  7. K. M. Patel and S. E. Ralph, "Enhanced multimode fiber link performance using a spatially resolved receiver", IEEE Photon. Technol. Lett., vol. 14, no. 3, pp. 393-395, Mar. 2002.
  8. E. Rochat, S. D. Walker, M. C. Parker and T. Boord, "A 2.5 Gb/s combined wavelength and polarization multiplexing transmission experiment over standard 50 µ m multimode fiber", presented at the Eur. Conf. Optical Communication (ECOC 2003), 2003.
  9. S. Otte, "Nachrichtentheoretische modellierung und elektronische entzerrung hochbitratiger optischer Übertragungssysteme", Ph.D. dissertation, Chair for Communications, University of Kiel, Kiel, Germany, 2003.
  10. S. Otte and W. Rosenkranz, "Performance of electronic compensator for chromatic dispersion & SPM", in Proc. Eur. Conf. Optical Communication (ECOC 2000), vol. 1, Munich, Germany, 2000, pp. 117-118.
  11. M. Webster, L. Raddatz, I. H. White and D. G. Cunningham, "A statistical analysis of conditioned launch for Gigabit ethernet links using multimode fiber", J. Lightw. Technol., vol. 17, no. 9, pp. 1532-1541, Sep. 1999.
  12. C.-A. Bunge, J.-R. Kropp and K. Petermann, "Applicability of DMD-measurements to new10-Gigabit-ethernet fibers", in Proc. Eur. Conf. Optical Communication (ECOC 2001), 2001, pp. 362-363.
  13. W. L. Mammel and L. G. Cohen, "Numerical prediction of fiber transmission characteristics from arbitrary refractive-index profiles", Appl. Opt. , vol. 21, no. 4, pp. 699-703, Feb. 1982.
  14. G. Yabre, "Comprehensive theory of dispersion in graded-index optical fibers", J. Lightw. Technol., vol. 18, no. 2, pp. 166-176, Feb. 2000.
  15. P. Pepeljugoski, S. E. Golowich, A. J. Ritger, P. Kolesar and A. Risteski, "Modeling and simulation of next-generation multimode fiber links", J. Lightw. Technol., vol. 21, no. 5, pp. 1242-1255, May 2003.
  16. J. H. Winters, "Equalization in coherent lightwave systems using a fractionally spaced equalizer", J. Ligthw. Technol., vol. 8, no. 10, pp. 1487-1491, Oct. 1990.
  17. J. G. Proakis, "Channel equalization," in The Communication Handbook , J. D. Gibson, Ed. Davis, CA: IEEE Press, Univ. of California, 1997, pp. 348-359.
  18. D. Marcuse, "Calculation of bandwidth from index profiles of optical fibers. 1: Theory", Appl. Opt., vol. 18, no. 12, pp. 2073-2080, Jun. 1979.

Other (18)

D. G. Cunningham, "The status of the 10-Gigabit ethernet standard", in Proc. Eur. Conf. Optical Communication (ECOC 2001), Amsterdam, The Netherlands, 2001, pp. 364-367.

J. E. George, S. Golowich, P. F. Kolesar, A. J. Ritger and M. Yang, "Laser optimized multimode fibers for short reach 10 Gbps systems", in Proc. Nat. Fiber Optic Engineers Conf. (NFOEC), Jul. 2001, pp. 351-361.

L. B. Aronson, B. E. Lemoff, L. A. Buckman and D. W. Dolfi, "Low cost multimode WDM for local area networks up to 10 Gb/s", IEEE Photon. Technol. Lett., vol. 10, no. 10, pp. 1489-1491, Oct. 1998.

E. J. Tyler, M. Webster, A. Wonfor, R. V. Penty and I. H. White, "Transmission of a single 2.5 Gb/s subcarrier modulated channel over 300 m of 62.5 µ m multimode fiber", in 13th Annu. Meeting Lasers Electro-Optics Society (LEOS 2000), vol. 1, Nov. 2000, pp. 354-355.

M. Webster, "10 Gbit/s transmission over 300 m standard multimode fiber using multilevel coding and 2 channel WDM", in Proc. Conf. Lasers Electro-Optics (CLEO 2000), 2000, pp. 94-95.

H. R. Stuart, "Dispersive multiplexing in multimode fiber", in Optical Fiber Communication Conf. (OFC 2000), Mar. 7-10 2000, pp. 305-307.

K. M. Patel and S. E. Ralph, "Enhanced multimode fiber link performance using a spatially resolved receiver", IEEE Photon. Technol. Lett., vol. 14, no. 3, pp. 393-395, Mar. 2002.

E. Rochat, S. D. Walker, M. C. Parker and T. Boord, "A 2.5 Gb/s combined wavelength and polarization multiplexing transmission experiment over standard 50 µ m multimode fiber", presented at the Eur. Conf. Optical Communication (ECOC 2003), 2003.

S. Otte, "Nachrichtentheoretische modellierung und elektronische entzerrung hochbitratiger optischer Übertragungssysteme", Ph.D. dissertation, Chair for Communications, University of Kiel, Kiel, Germany, 2003.

S. Otte and W. Rosenkranz, "Performance of electronic compensator for chromatic dispersion & SPM", in Proc. Eur. Conf. Optical Communication (ECOC 2000), vol. 1, Munich, Germany, 2000, pp. 117-118.

M. Webster, L. Raddatz, I. H. White and D. G. Cunningham, "A statistical analysis of conditioned launch for Gigabit ethernet links using multimode fiber", J. Lightw. Technol., vol. 17, no. 9, pp. 1532-1541, Sep. 1999.

C.-A. Bunge, J.-R. Kropp and K. Petermann, "Applicability of DMD-measurements to new10-Gigabit-ethernet fibers", in Proc. Eur. Conf. Optical Communication (ECOC 2001), 2001, pp. 362-363.

W. L. Mammel and L. G. Cohen, "Numerical prediction of fiber transmission characteristics from arbitrary refractive-index profiles", Appl. Opt. , vol. 21, no. 4, pp. 699-703, Feb. 1982.

G. Yabre, "Comprehensive theory of dispersion in graded-index optical fibers", J. Lightw. Technol., vol. 18, no. 2, pp. 166-176, Feb. 2000.

P. Pepeljugoski, S. E. Golowich, A. J. Ritger, P. Kolesar and A. Risteski, "Modeling and simulation of next-generation multimode fiber links", J. Lightw. Technol., vol. 21, no. 5, pp. 1242-1255, May 2003.

J. H. Winters, "Equalization in coherent lightwave systems using a fractionally spaced equalizer", J. Ligthw. Technol., vol. 8, no. 10, pp. 1487-1491, Oct. 1990.

J. G. Proakis, "Channel equalization," in The Communication Handbook , J. D. Gibson, Ed. Davis, CA: IEEE Press, Univ. of California, 1997, pp. 348-359.

D. Marcuse, "Calculation of bandwidth from index profiles of optical fibers. 1: Theory", Appl. Opt., vol. 18, no. 12, pp. 2073-2080, Jun. 1979.

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