Abstract

We simulate subcarrier-modulated (SCM) transmission over 300 m of 62.5-µm-core-diameter multimode fiber (MMF) using 1300-nm edge-emitting lasers and 850-nm vertical-cavity surface-emitting lasers (VCSELs) for beam offsets from 0 to 30 µm. We model 81"worst-case"fibers while scaling their bandwidth according to a differential modal delay (DMD) criterion of 2 ns/km for our analysis at a center wavelength of 1300 nm and a DMD of 4 ns/km for analysis at 850 nm, all in order to ensure that the worst 5% of the MMF is being modeled as per the Gigabit Ethernet standard. We consider SCM carrier frequencies from 1 to 9 GHz at data rates of 1.25 and 2.5 Gb/s. Results show that SCM transmission with eye-opening penalties (EOPs) below 3 dB is achievable at 2.5 Gb/s for both edge-emitting lasers and VCSELs. VCSELs are found to be better suited for center launch than offset launch while edge-emitting lasers are better suited for offset launch at radial offsets of 17 to 23 µm. The region of best performance for VCSELs under offset launch is from radial offsets of 17 to 30 µm at carrier frequencies of 0 to 8 GHz, over which we observed an EOP less than 5 dB, while for edge-emitting lasers we observed a region of best performance from 10 to 25 µm over carrier frequencies from 2.5 to 9 GHz. This means that if interchannel crosstalk was ignored, a theoretical aggregate maximum bit rate for VCSELs of \sim 7.5 Gb/s should be achieved for three channels using a single offset launch between 17 and 30 µm for a fiber length of 300 m in order to achieve an EOP less than 5 dB for each channel. For edge-emitting lasers, the theoretical maximum is \sim 5 Gb/s for two channels with each having an EOP of less than 3 dB for transmission over a fiber of length 300 m. We also demonstrate how SCM performance is influenced by the usable average slope (UAS) of the frequency response: a UAS greater than 0.6 x 10-8dB/Hz implies severe deterioration of SCM performance.

© 2005 IEEE

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  1. "The Gigabit Ethernet Standard", IEEE Standard 802.3z, 1998.
  2. "The 10 Gigabit Ethernet Standard", IEEE Standard 802.3ae, 2002.
  3. L. Raddatz and I. H. White, "Overcoming the modal bandwidth limitation of multimode fiber by using passband moduation", IEEE Photon. Technol. Lett., vol. 11, no. 2, pp. 266-268, Feb. 1999.
  4. P. Kourtessis, S. Dudley, T. Quinlan, S. D. Walker, E. J. Tyler, R. V. Penty and I. H. White, "A complete 5-Gb/s throughput quadrature subcarrier system featuring zero-latency carrier and data synchronization", in Proc. Optical Fiber Communication (OFC), Anaheim, CA, 2002, pp. 144-145.
  5. L. B. Aronson, B. E. Lemoff, L. A. Buckham 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.
  6. L. Raddatz, I. H. White, D. G. Cunningham and M. C. Nowell, "An experimental and theoretical study of the offset launch technique for the enhancement of the bandwidth of multimode fiber links", J. Lightw. Technol., vol. 16, no. 3, pp. 324-331, Mar. 1998.
  7. L. Raddatz, I. H. White, D. G. Cunningham, M. C. Nowell, M. R. T. Tan and S.-Y. Wang, "A fiber-optic M-ary modulation scheme using multiple light sources", in Proc. Optical Fiber Communication (OFC), Dallas, TX, 1997,paper WL36L,. pp. 198-199.
  8. M. Webster, A. B. Massara, I. H. White and R. V. Penty, "10-Gb/s transmission over 300 m of standard multimode fiber using multilevel coding and 2-channel WDM", in Proc. Conf. Lasers Electro-Optics (CLEO), San Francisco, CA, 2000, pp. 94-95.
  9. T. E. Darcie, "Subcarrier multiplexing for lightwave networks and video distribution systems", IEEE J. Sel. Areas Commun., vol. 8, no. 7, pp. 1240-1248, Sep. 1990.
  10. L. Raddatz, D. Hardacre, I. H. White, R. V. Penty, D. G. Cunningham, M. R. T. Tan and S.-Y. Wang, "High bandwidth data transmission in multimode fibre links using subcarrier multiplexing with VCSELs", Electron. Lett., vol. 34, no. 7, pp. 686-688, Apr. 1998.
  11. T. K. Woodward, S. Hunusche, A. J. Ritger and T. B. Stark, "1-Gb/s BPSK transmission at 850 nm over 1 km of 62.5- µ m -core MMF using a single 2.5 GHz subcarrier", IEEE Photon. Technol. Lett., vol. 11, no. 3, pp. 382-384, Mar. 1999.
  12. E. J. Tyler, M. Webster, R. V. Penty and I. H. White, "Subcarrier modulation for transmission of 1-Gb/s channels over 500 m of 62.5- µ m multimode fiber", in Proc. Conf. Lasers and Electro-Optics (CLEO), San Francisco, CA, 2000, p. 95.
  13. 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 Lasers Electro-Optics Society Annu. Meeting, Rio Grande, PR, 2000, pp. 354-355.
  14. E. J. Tyler, M. Webster, R. V. Penty and I. H. White, "Penalty free subcarrier modulated multimode fiber links for datacomm applications beyond the bandwidth limit", IEEE Photon. Technol. Lett., vol. 14, no. 1, pp. 110-112, Jan. 2002.
  15. G. Rossi, O. Jerphagon, B. E. Olsson and D. J. Blumenthal, "Optical SCM data extraction using a fiber loop mirror for WDM network systems", in Proc. Optical Fiber Communication (OFC), Baltimore, MD, 2000, pp. 74-76.
  16. A. Budman, E. Eichen, J. Schlafer, R. Olshansky and F. McAleavy, "Multigigabit optical packet switch for self-routing networks with subcarrier addressing", in Proc. Optical Fiber Communication (OFC), San Jose, CA, 1992, pp. 90-91.
  17. D. J. Blumenthal, A. Carena, L. Rau, V. Curri and S. Humphries, "All optical label swapping with wavelength conversion for WDM-IP networks with subcarrier multiplexed addressing", IEEE Photon. Technol. Lett., vol. 12, no. 6, pp. 1497-1499, Nov. 1999.
  18. K.-P. Ho and J. M. Kahn, "Methods for crosstalk measurement and reduction in dense WDM systems", J. Lightw. Technol., vol. 14, no. 6, pp. 1127-1135, Jun. 1996.
  19. R. Guadino, M. Len, G. Desa, M. Shell and D. J. Blumenthal, "MOSAIC: A multiwavelength optical subcarrier multiplexed controlled network", IEEE J. Sel. Areas Commun., vol. 16, no. 7, pp. 1270-1285, Sep. 1998.
  20. H. Kim, H. G. Woo and Y. C. Chung, "Effects of unisolated optical sources on bidirectional SCM transmission systems", in Proc. Optical Fiber Communication (OFC), Baltimore, MD, 2000, pp. 369-371.
  21. R. Hui, B. Zhu, R. Huang, C. Allen, K. Demarest and D. Richards, "10-Gb/s SCM system using optical single side band modulation", in Proc. Optical Fiber Communication (OFC), Anaheim, CA, 2001, pp. 896-898.
  22. R. Hui, B. Zhu, R. Huang, C. Allen, K. Demarest and D. Richards, "10-Gb/s SCM fiber system using optical SSB modulation", IEEE Photon. Technol. Lett., vol. 13, no. 8, pp. 896-898, Aug. 2001.
  23. E. J. Tyler, M. Webster, K. A. Williams, A. Wonfor, R. V. Penty and I. H. White, "Proposal and demonstration of transmission of 10 Gb/s over 300 m of installed-base 62.5- µ m multimode fiber using advanced formats", in Proc. Optical Fiber Communication (OFC), Anaheim, CA, 2001, pp. WDD42-1-WDD42-3.
  24. M. Webster, E. J. Tyler, A. Wonfor, R. V. Penty and I. H. White, "Novel cascaded optical coding schemes for bandwidth efficient systems applications", in Proc. Optical Fiber Communication (OFC), Anaheim, CA, 2001, pp. WDD47-1-WDD47-3.
  25. L. Raddatz, "High speed fiber-optic datacommunication systems", Ph.D. dissertation, Univ. Bristol, U.K., 1998.
  26. G. P. Agrawal, Fiber-Optic Communication Systems, 3rd ed. New York: Wiley, 2002, ch. 2.
  27. G. D. Brown, "Bandwidth and rise time calculations for digital multimode fiber-optic data links", J. Lightw. Technol., vol. 10, no. 5, pp. 672-678, May 1992.
  28. D. G. Cunningham and W. G. Lane, Gigabit Ethernet Networking, Indianapolis, IN: MacMillan, 1999, ch. 10.
  29. 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.
  30. P. Pepeljugoski, M. J. Hackert, J. S. Abbott, S. E. Swanson, S. E. Golowich, A. J. Ritger, P. Kolesar, Y. C. Chen and P. Pleunis, "Development of system specification for laser-optimized 50 µ m multimode fiber for multigigabit short-wavelength LANs", J. Lightw. Technol., vol. 21, no. 5, pp. 1256-1275, May 2003.
  31. E. J. Tyler, M. Webster, R. V. Penty, I. H. White, S. Yu and J. Rorison, "Subcarrier modulated transmission of 2.5-Gb/s over 300 m of 62.5- µ m -core-diameter multimode fiber", IEEE Photon. Technol. Lett., vol. 14, no. 12, pp. 1743-1745, Dec. 2002.

Other (31)

"The Gigabit Ethernet Standard", IEEE Standard 802.3z, 1998.

"The 10 Gigabit Ethernet Standard", IEEE Standard 802.3ae, 2002.

L. Raddatz and I. H. White, "Overcoming the modal bandwidth limitation of multimode fiber by using passband moduation", IEEE Photon. Technol. Lett., vol. 11, no. 2, pp. 266-268, Feb. 1999.

P. Kourtessis, S. Dudley, T. Quinlan, S. D. Walker, E. J. Tyler, R. V. Penty and I. H. White, "A complete 5-Gb/s throughput quadrature subcarrier system featuring zero-latency carrier and data synchronization", in Proc. Optical Fiber Communication (OFC), Anaheim, CA, 2002, pp. 144-145.

L. B. Aronson, B. E. Lemoff, L. A. Buckham 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.

L. Raddatz, I. H. White, D. G. Cunningham and M. C. Nowell, "An experimental and theoretical study of the offset launch technique for the enhancement of the bandwidth of multimode fiber links", J. Lightw. Technol., vol. 16, no. 3, pp. 324-331, Mar. 1998.

L. Raddatz, I. H. White, D. G. Cunningham, M. C. Nowell, M. R. T. Tan and S.-Y. Wang, "A fiber-optic M-ary modulation scheme using multiple light sources", in Proc. Optical Fiber Communication (OFC), Dallas, TX, 1997,paper WL36L,. pp. 198-199.

M. Webster, A. B. Massara, I. H. White and R. V. Penty, "10-Gb/s transmission over 300 m of standard multimode fiber using multilevel coding and 2-channel WDM", in Proc. Conf. Lasers Electro-Optics (CLEO), San Francisco, CA, 2000, pp. 94-95.

T. E. Darcie, "Subcarrier multiplexing for lightwave networks and video distribution systems", IEEE J. Sel. Areas Commun., vol. 8, no. 7, pp. 1240-1248, Sep. 1990.

L. Raddatz, D. Hardacre, I. H. White, R. V. Penty, D. G. Cunningham, M. R. T. Tan and S.-Y. Wang, "High bandwidth data transmission in multimode fibre links using subcarrier multiplexing with VCSELs", Electron. Lett., vol. 34, no. 7, pp. 686-688, Apr. 1998.

T. K. Woodward, S. Hunusche, A. J. Ritger and T. B. Stark, "1-Gb/s BPSK transmission at 850 nm over 1 km of 62.5- µ m -core MMF using a single 2.5 GHz subcarrier", IEEE Photon. Technol. Lett., vol. 11, no. 3, pp. 382-384, Mar. 1999.

E. J. Tyler, M. Webster, R. V. Penty and I. H. White, "Subcarrier modulation for transmission of 1-Gb/s channels over 500 m of 62.5- µ m multimode fiber", in Proc. Conf. Lasers and Electro-Optics (CLEO), San Francisco, CA, 2000, p. 95.

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 Lasers Electro-Optics Society Annu. Meeting, Rio Grande, PR, 2000, pp. 354-355.

E. J. Tyler, M. Webster, R. V. Penty and I. H. White, "Penalty free subcarrier modulated multimode fiber links for datacomm applications beyond the bandwidth limit", IEEE Photon. Technol. Lett., vol. 14, no. 1, pp. 110-112, Jan. 2002.

G. Rossi, O. Jerphagon, B. E. Olsson and D. J. Blumenthal, "Optical SCM data extraction using a fiber loop mirror for WDM network systems", in Proc. Optical Fiber Communication (OFC), Baltimore, MD, 2000, pp. 74-76.

A. Budman, E. Eichen, J. Schlafer, R. Olshansky and F. McAleavy, "Multigigabit optical packet switch for self-routing networks with subcarrier addressing", in Proc. Optical Fiber Communication (OFC), San Jose, CA, 1992, pp. 90-91.

D. J. Blumenthal, A. Carena, L. Rau, V. Curri and S. Humphries, "All optical label swapping with wavelength conversion for WDM-IP networks with subcarrier multiplexed addressing", IEEE Photon. Technol. Lett., vol. 12, no. 6, pp. 1497-1499, Nov. 1999.

K.-P. Ho and J. M. Kahn, "Methods for crosstalk measurement and reduction in dense WDM systems", J. Lightw. Technol., vol. 14, no. 6, pp. 1127-1135, Jun. 1996.

R. Guadino, M. Len, G. Desa, M. Shell and D. J. Blumenthal, "MOSAIC: A multiwavelength optical subcarrier multiplexed controlled network", IEEE J. Sel. Areas Commun., vol. 16, no. 7, pp. 1270-1285, Sep. 1998.

H. Kim, H. G. Woo and Y. C. Chung, "Effects of unisolated optical sources on bidirectional SCM transmission systems", in Proc. Optical Fiber Communication (OFC), Baltimore, MD, 2000, pp. 369-371.

R. Hui, B. Zhu, R. Huang, C. Allen, K. Demarest and D. Richards, "10-Gb/s SCM system using optical single side band modulation", in Proc. Optical Fiber Communication (OFC), Anaheim, CA, 2001, pp. 896-898.

R. Hui, B. Zhu, R. Huang, C. Allen, K. Demarest and D. Richards, "10-Gb/s SCM fiber system using optical SSB modulation", IEEE Photon. Technol. Lett., vol. 13, no. 8, pp. 896-898, Aug. 2001.

E. J. Tyler, M. Webster, K. A. Williams, A. Wonfor, R. V. Penty and I. H. White, "Proposal and demonstration of transmission of 10 Gb/s over 300 m of installed-base 62.5- µ m multimode fiber using advanced formats", in Proc. Optical Fiber Communication (OFC), Anaheim, CA, 2001, pp. WDD42-1-WDD42-3.

M. Webster, E. J. Tyler, A. Wonfor, R. V. Penty and I. H. White, "Novel cascaded optical coding schemes for bandwidth efficient systems applications", in Proc. Optical Fiber Communication (OFC), Anaheim, CA, 2001, pp. WDD47-1-WDD47-3.

L. Raddatz, "High speed fiber-optic datacommunication systems", Ph.D. dissertation, Univ. Bristol, U.K., 1998.

G. P. Agrawal, Fiber-Optic Communication Systems, 3rd ed. New York: Wiley, 2002, ch. 2.

G. D. Brown, "Bandwidth and rise time calculations for digital multimode fiber-optic data links", J. Lightw. Technol., vol. 10, no. 5, pp. 672-678, May 1992.

D. G. Cunningham and W. G. Lane, Gigabit Ethernet Networking, Indianapolis, IN: MacMillan, 1999, ch. 10.

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.

P. Pepeljugoski, M. J. Hackert, J. S. Abbott, S. E. Swanson, S. E. Golowich, A. J. Ritger, P. Kolesar, Y. C. Chen and P. Pleunis, "Development of system specification for laser-optimized 50 µ m multimode fiber for multigigabit short-wavelength LANs", J. Lightw. Technol., vol. 21, no. 5, pp. 1256-1275, May 2003.

E. J. Tyler, M. Webster, R. V. Penty, I. H. White, S. Yu and J. Rorison, "Subcarrier modulated transmission of 2.5-Gb/s over 300 m of 62.5- µ m -core-diameter multimode fiber", IEEE Photon. Technol. Lett., vol. 14, no. 12, pp. 1743-1745, Dec. 2002.

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