Abstract

The use of nonlinearity precompensation in direct-detection optical orthogonal frequency division multiplexed links is investigated by simulation. Because of the presence of a strong optical carrier its performance is poorer than for coherent systems: with compensation the signal quality is found to vary almost periodically across the signal band. We propose and explain the operation of two optical, one electrical and one computational method of removing this periodic variation. Optical filtering of one sideband at the receiver is most effective, but a substantial improvement can be obtained by a simple modification to the precompensation algorithm.

© 2008 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. A. J. Lowery and J. Armstrong, "Orthogonal frequency division multiplexing for dispersion compensation of long-haul optical systems," Opt. Express 14, 2079-2084 (2006).
    [CrossRef] [PubMed]
  2. W.  Shieh and C.  Athaudage, "Coherent optical orthogonal frequency division multiplexing," Electron. Lett.  42, 587-589 (2006).
    [CrossRef]
  3. B. J. C. Schmidt, A. J. Lowery and J. Armstrong, "Experimental demonstrations of 20 Gbit/s direct-detection optical OFDM and 12 Gbit/s with a colorless transmitter," in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest Series (CD) (Optical Society of America, 2007), paper PDP18. http://www.opticsinfobase.org/abstract.cfm?URI=OFC-2007-PDP18
    [PubMed]
  4. S. L.  Jansen, I.  Morita, N.  Takeda, and H.  Tanaka, "20-Gb/s OFDM Transmission over 4,160-km SSMF Enabled by RF-Pilot Tone Phase Noise Compensation," in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest Series (CD) (Optical Society of America, 2007), paper PDP15. http://www.opticsinfobase.org/abstract.cfm?URI=OFC-2007-PDP15
    [PubMed]
  5. A. J. Lowery, S. Wang, and M. Premaratne, "Calculation of power limit due to fiber nonlinearity in optical OFDM systems," Opt. Express 15, 13282-13287 (2007). http://www.opticsinfobase.org/abstract.cfm?URI=oe-15-20-13282
    [CrossRef] [PubMed]
  6. A. J.  Lowery, L. B. Y.  Du, and J.  Armstrong, "Performance of optical OFDM in ultralong-haul WDM lightwave systems," J. Lightwave Technol.  25, 131-138 (2007).
    [CrossRef]
  7. A. J. Lowery, "Fiber nonlinearity mitigation in optical links that use OFDM for dispersion compensation," IEEE Photon. Technol. Lett. 19,1556-1558 (2007).
    [CrossRef]
  8. A. J. Lowery, "Fiber nonlinearity pre- and post-compensation for long-haul optical links using OFDM," Opt. Express 15, 12965-12970 (2007).
    [CrossRef] [PubMed]
  9. W. Shieh, X. Yi, Y. Ma, and Y. Tang, "Theoretical and experimental study on PMD-supported transmission using polarization diversity in coherent optical OFDM systems," Opt. Express 15, 9936-9947 (2007).
    [CrossRef] [PubMed]
  10. A. J. Lowery, "Amplified-spontaneous noise limit of optical OFDM lightwave systems," Opt. Express 16, 860-865 (2008).
    [CrossRef] [PubMed]
  11. S. Yamamoto, N, Edagawa, H. Taga, Y, Yoshida, and H. Wakabayashi, "Analysis of laser phase noise to intensity noise conversion by chromatic dispersion in intensity modulation and direct detection optical-fiber transmission," J. Lightwave Technol.  8, 1716-1722 (1990).
    [CrossRef]

2008 (1)

2007 (5)

2006 (2)

A. J. Lowery and J. Armstrong, "Orthogonal frequency division multiplexing for dispersion compensation of long-haul optical systems," Opt. Express 14, 2079-2084 (2006).
[CrossRef] [PubMed]

W.  Shieh and C.  Athaudage, "Coherent optical orthogonal frequency division multiplexing," Electron. Lett.  42, 587-589 (2006).
[CrossRef]

1990 (1)

S. Yamamoto, N, Edagawa, H. Taga, Y, Yoshida, and H. Wakabayashi, "Analysis of laser phase noise to intensity noise conversion by chromatic dispersion in intensity modulation and direct detection optical-fiber transmission," J. Lightwave Technol.  8, 1716-1722 (1990).
[CrossRef]

Armstrong, J.

Athaudage, C.

W.  Shieh and C.  Athaudage, "Coherent optical orthogonal frequency division multiplexing," Electron. Lett.  42, 587-589 (2006).
[CrossRef]

Du, L. B. Y.

Lowery, A. J.

Ma, Y.

Premaratne, M.

Shieh, W.

Tang, Y.

Wang, S.

Yamamoto, S.

S. Yamamoto, N, Edagawa, H. Taga, Y, Yoshida, and H. Wakabayashi, "Analysis of laser phase noise to intensity noise conversion by chromatic dispersion in intensity modulation and direct detection optical-fiber transmission," J. Lightwave Technol.  8, 1716-1722 (1990).
[CrossRef]

Yi, X.

Electron. Lett. (1)

W.  Shieh and C.  Athaudage, "Coherent optical orthogonal frequency division multiplexing," Electron. Lett.  42, 587-589 (2006).
[CrossRef]

IEEE Photon. Technol. Lett. (1)

A. J. Lowery, "Fiber nonlinearity mitigation in optical links that use OFDM for dispersion compensation," IEEE Photon. Technol. Lett. 19,1556-1558 (2007).
[CrossRef]

J. Lightwave Technol. (2)

A. J.  Lowery, L. B. Y.  Du, and J.  Armstrong, "Performance of optical OFDM in ultralong-haul WDM lightwave systems," J. Lightwave Technol.  25, 131-138 (2007).
[CrossRef]

S. Yamamoto, N, Edagawa, H. Taga, Y, Yoshida, and H. Wakabayashi, "Analysis of laser phase noise to intensity noise conversion by chromatic dispersion in intensity modulation and direct detection optical-fiber transmission," J. Lightwave Technol.  8, 1716-1722 (1990).
[CrossRef]

Opt. Express (5)

Other (2)

B. J. C. Schmidt, A. J. Lowery and J. Armstrong, "Experimental demonstrations of 20 Gbit/s direct-detection optical OFDM and 12 Gbit/s with a colorless transmitter," in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest Series (CD) (Optical Society of America, 2007), paper PDP18. http://www.opticsinfobase.org/abstract.cfm?URI=OFC-2007-PDP18
[PubMed]

S. L.  Jansen, I.  Morita, N.  Takeda, and H.  Tanaka, "20-Gb/s OFDM Transmission over 4,160-km SSMF Enabled by RF-Pilot Tone Phase Noise Compensation," in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, OSA Technical Digest Series (CD) (Optical Society of America, 2007), paper PDP15. http://www.opticsinfobase.org/abstract.cfm?URI=OFC-2007-PDP15
[PubMed]

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 (5)

Fig. 1.
Fig. 1.

Block diagram for an optical OFDM transmitter with nonlinear precompensation.

Fig. 2.
Fig. 2.

Signal quality versus subcarrier for coherent (C) and direct-detection (DD) systems without precompensation.

Fig. 3.
Fig. 3.

Dependence on Q on subcarrier frequency for various effective lengths of precompensation.

Fig. 4.
Fig. 4.

Performance of the precompensation systems versus subcarrier frequency.

Fig. 5.
Fig. 5.

Histograms of Q(dB) for the individual subcarriers. Top - optical filtering at the transmitter; Bottom - electrical filtering at the transmitter.

Equations (1)

Equations on this page are rendered with MathJax. Learn more.

ϕ ( t ) = 2 π n 2 s L eff P ( t ) ( λ 0 A eff )

Metrics