Abstract

Orthogonal Frequency Division Multiplexing (OFDM) can provide electronic dispersion compensation of optical paths. However, it requires a high bias to convert bipolar electrical signals to unipolar optical signals, so is inefficient in optical power for a given electrical signal to noise ratio. We present a novel method of transmitting OFDM signals over multimode fibers that increases electrical SNR by 7 dB for a given optical power. Using simulations, we show a 1.8 dB sensitivity benefit over 10 Gbit/s NRZ (Non-Return to Zero) and demonstrate compensation of inter-modal dispersion in a 300-m multimode fiber that cannot support NRZ.

© 2005 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |

  1. J. Peeters Weem, P. Kirkpatrick, and J. Verdiell, "Electronic dispersion compensation for 10 gigabit communication links over FDDI legacy multimode fiber", Tech. Digest of the Optical Fiber Communication Conference 5, 306-308 (2005).
  2. K. Balemarthy, S. Ralph, R. Lingle, G. Oulundsen, Yi Sun and J. George, "Electronic dispersion compensation of non-ideal multimode fiber links," Tech. Digest of the Optical Fiber Communication Conference 1, 187-189 (2005).
  3. J.G. Proakis and M. Salehi, "Essentials of Communications Systems Engineering" (Prentice Hall, New Jersey, 2005) Chapter 11.
  4. M. Alard and R. Lassalle, "Principles of modulation and channel coding for digital broadcasting for mobile receivers," European Broadcasting Union Review 224, 3-25 (1987).
  5. B.J. Dixon, R.D. Pollard, and S. Iezekeil, "Orthogonal frequency-division multiplexing in wireless communication systems with multimode fiber feeds," IEEE Trans. Microwave Theory Tech. 49, 1404-1409 (2001).
    [CrossRef]
  6. J. B. Carruthers and J.M. Khan, "Multi-subcarrier modulation for non-directed wireless infrared communication," IEEE J. Sel. Areas Commun. 14, 538-546 (1996).
    [CrossRef]
  7. A.A.M. Salah, "Fundamental limit on number of channels in subcarrier-multiplexed lightwave CATV system," Electron. Lett. 25, 776-777 (1989).
    [CrossRef]
  8. O. González, R. Pérez-Jiménez, S. Rodríguez, J. Rabadán and A. Ayala, "OFDM over indoor wireless optical channel," IEEE Proc. -Optoelectron., 152, 199-204 (2005).
    [CrossRef]
  9. D. Chanda, A.B. Sesay and Bob Davis, "Performance of clipped OFDM signal in fiber," Proc. IEEE Canadian Conference on Electrical and Computer Engineering 4, 2401-2404 (IEEE, N.Y., 2004)
  10. K.R. Panta and J. Armstrong, "Effects of clipping on the error performance of OFDM in frequency selective fading channels," IEEE Trans. on Wireless Communications, 3, 668-671 (2001).
    [CrossRef]

Electron. Lett.

A.A.M. Salah, "Fundamental limit on number of channels in subcarrier-multiplexed lightwave CATV system," Electron. Lett. 25, 776-777 (1989).
[CrossRef]

European Broadcasting Union Review

M. Alard and R. Lassalle, "Principles of modulation and channel coding for digital broadcasting for mobile receivers," European Broadcasting Union Review 224, 3-25 (1987).

IEEE J. Sel. Areas Commun.

J. B. Carruthers and J.M. Khan, "Multi-subcarrier modulation for non-directed wireless infrared communication," IEEE J. Sel. Areas Commun. 14, 538-546 (1996).
[CrossRef]

IEEE Proc. -Optoelectron

O. González, R. Pérez-Jiménez, S. Rodríguez, J. Rabadán and A. Ayala, "OFDM over indoor wireless optical channel," IEEE Proc. -Optoelectron., 152, 199-204 (2005).
[CrossRef]

IEEE Trans. Microwave Theory Tech.

B.J. Dixon, R.D. Pollard, and S. Iezekeil, "Orthogonal frequency-division multiplexing in wireless communication systems with multimode fiber feeds," IEEE Trans. Microwave Theory Tech. 49, 1404-1409 (2001).
[CrossRef]

IEEE Trans. on Wireless Communications

K.R. Panta and J. Armstrong, "Effects of clipping on the error performance of OFDM in frequency selective fading channels," IEEE Trans. on Wireless Communications, 3, 668-671 (2001).
[CrossRef]

Proc. IEEE Canadian Conf. on Elect and C

D. Chanda, A.B. Sesay and Bob Davis, "Performance of clipped OFDM signal in fiber," Proc. IEEE Canadian Conference on Electrical and Computer Engineering 4, 2401-2404 (IEEE, N.Y., 2004)

Tech. Digest of the Opt. Fiber Comm. Con

J. Peeters Weem, P. Kirkpatrick, and J. Verdiell, "Electronic dispersion compensation for 10 gigabit communication links over FDDI legacy multimode fiber", Tech. Digest of the Optical Fiber Communication Conference 5, 306-308 (2005).

K. Balemarthy, S. Ralph, R. Lingle, G. Oulundsen, Yi Sun and J. George, "Electronic dispersion compensation of non-ideal multimode fiber links," Tech. Digest of the Optical Fiber Communication Conference 1, 187-189 (2005).

Other

J.G. Proakis and M. Salehi, "Essentials of Communications Systems Engineering" (Prentice Hall, New Jersey, 2005) Chapter 11.

Cited By

OSA participates in CrossRef's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (7)

Fig. 1.
Fig. 1.

Principle of OFDM transmitter illustrated with binary phase-shift keying.

Fig. 2.
Fig. 2.

Implementation of electrical OFDM using discrete Fourier transforms.

Fig. 3.
Fig. 3.

Optical OFDM system block diagram including waveforms and spectra.

Fig. 4.
Fig. 4.

Signal quality over optical power versus bias level.

Fig. 5.
Fig. 5.

Signal quality versus link attenuation for clipped and unclipped OFDM systems.

Fig. 6.
Fig. 6.

(left) NRZ system; (centre) unequalized OFDM; (right) equalized OFDM.

Fig. 7.
Fig. 7.

BER versus link loss (1-mW transmitted power) for NRZ and OFDM systems.

Metrics