Abstract

In this paper, we propose and experimentally demonstrate a radio frequency (RF)-tone-assisted optical orthogonal frequency-division multiplexing (OFDM) transmission. By inserting an RF tone at the edge of the signal band and biasing the Mach–Zehnder modulator (MZM) at the null point, the proposed system has a better sensitivity and chromatic dispersion (CD) tolerance compared to the previous intensity-modulated single-sideband OFDM (SSB-OFDM). We show analytically that the majority of the linear channel impairments, such as the transmitter, CD, optical filtering, and receiver, can be compensated for by a simple zero-forcing equalizer. Besides, the optimum value of the important parameter, carrier-to-signal-power ratio (CSPR), is analytically obtained and supported via the experimental results. We also observe that the relatively worse sensitivity of the previous SSB-OFDM can be attributed to the limited CSPR. We experimentally demonstrate a 10-Gb/s, 8 quadrature-amplitude modulation (QAM) RF-tone-assisted OFDM transmission, and show that our system has a ${\sim}$5-dB better sensitivity compared to the previous intensity-modulated SSB-OFDM and exhibits a negligible transmission penalty after 260-km uncompensated standard single-mode fiber (SSMF).

© 2008 IEEE

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  1. B. J. C. Schmidt, A. J. Lowery, J. Armstrong, "Experimental demonstrations of electronic dispersion compensation for long-haul transmission using direct-detection optical OFDM," J. Lightw. Technol. 26, 196-203 (2008).
  2. W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-859 (2008).
  3. S. L. Jansen, I. Morita, T. C. W. Schenk, N. Takeda, H. Tanaka, "Coherent optical 25.8-Gb/s OFDM transmission over 4160-km SSMF," J. Lightw. Technol. 26, 6-15 (2008).
  4. W. Shieh, "PMD-supported coherent optical OFDM systems," IEEE Photon. Technol. Lett. 19, 134-136 (2007).
  5. M. Mayrock, H. Haunstein, "PMD tolerant direct-detection optical OFDM system," Proc. Eur. Conf. Opt. Commun. (2007).
  6. C. Xie, "PMD insensitive direct-detection optical OFDM systems using self-polarization diversity," Proc. Opt. Fiber Commun. Conf. (2008).
  7. W. R. Peng, K. M. Feng, A. E. Willner, "Direct-detected polarization division multiplexed OFDM systems with self-polarization diversity," Proc. Lasers Electro-Opt. Soc. (2008).
  8. D. F. Hewitt, "Orthogonal frequency division multiplexing using baseband optical single sideband for simpler adaptive dispersion compensation," Proc. Opt. Fiber Commun. Conf. (2007).
  9. W. R. Peng, S. Chi, "Improving the transmission performance for an externally modulated baseband single sideband OFDM signal using nonlinear post-compensation and differential encoding schemes," Proc. Eur. Conf. Opt. Commun. (2007).
  10. M. Schuster, C. A. Bunge, K. Petermann, B. Spinnler, "Spectrally efficient OFDM-transmission with compatible single-sideband modulation for direct detection," Proc. Eur. Conf. Opt. Commun. (2007).
  11. M. Schuster, S. Randel, C. A. Bunge, S. C. J. Lee, F. Breyer, B. Spinnler, K. Petermann, "Spectrally efficient compatible single-sideband modulation for OFDM transmission with direct detection," IEEE Photon. Technol. Lett. 20, 670-672 (2008).
  12. W. R. Peng, X. Wu, V. R. Arbab, B. Shamee, L. C. Christen, J. Y. Yang, K. M. Feng, A. E. Willner, S. Chi, "Experimental demonstration of a coherently modulated and directly detected optical OFDM system using an RF-tone insertion," Proc. Opt. Fiber Commun. Conf. (2008).
  13. V. Cizek, "Discrete Hilbert transform," IEEE Trans. Audio Electroacoust. 18, 340-343 (1970).
  14. M. Sieben, J. Conradi, D. E. Dodds, "Optical single sideband transmission at 10 Gbps using only electrical dispersion compensation," J. Lightw. Technol. 17, 1742-1749 (1999).
  15. Y. Tang, W. Shieh, X. Yi, R. Evans, "Optimum design for RF-to optical up-converter in coherent optical OFDM systems," IEEE Photon. Technol. Lett. 19, 483-485 (2007).
  16. Y. Tang, K. P. Ho, W. Shieh, "Coherent optical OFDM transmitter design employing predistortion," IEEE Photon. Technol. Lett. 20, 954-956 (2008).
  17. J. Wang, J. M. Kahn, "Impact of chromatic and polarization mode dispersions on DPSK systems using interferometric demodulation and direct detection," J. Lightw. Technol. 22, 362-371 (2004).
  18. R. van Nee, R. Presad, OFDM for Wireless Multimedia Communications. (Artech House, 2000).
  19. A. J. Lowery, L. B. Du, J. Armstrong, "Performance of optical OFDM in ultralong-haul WDM lightwave systems," J. Lightw Technol. 25, 131-138 (2007).
  20. S. L. Jansen, I. Morita, N. Takeda, H. Tanaka, "Pre-emphasis and RF-pilot tone phase noise compensation for coherent OFDM transmission systems," Proc. LEOS (2007).
  21. W. R. Peng, X. Wu, V. R. Arbab, B. Shamee, J. Y. Yang, L. C. Christen, K. M. Feng, A. E. Willner, S. Chi, "Experimental demonstration of 340 km SSMF transmission using a virtual single sideband OFDM signal that employs carrier suppressed and iterative detection techniques," Proc. Opt. Fiber Commun. Conf. (2008).
  22. S. L. Jansen, I. Morita, H. Tanaka, "10$\,\times\,$121.9-Gb/s PDM-OFDM transmission with 2-b/s/Hz spectral efficiency over 1 000 km of SSMF," Proc. Opt. Fiber Commun. Conf. (2008).
  23. A. J. Lowery, "Improving sensitivity and spectra efficiency in direct-detection optical OFDM systems," Proc. Opt. Fiber Commun. Conf. (2008).
  24. A. J. Lowery, "Amplified-spontaneous noise limit of optical OFDM lightwave systems," Opt. Exp. 16, 860-865 (2008).

2008 (6)

B. J. C. Schmidt, A. J. Lowery, J. Armstrong, "Experimental demonstrations of electronic dispersion compensation for long-haul transmission using direct-detection optical OFDM," J. Lightw. Technol. 26, 196-203 (2008).

W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-859 (2008).

S. L. Jansen, I. Morita, T. C. W. Schenk, N. Takeda, H. Tanaka, "Coherent optical 25.8-Gb/s OFDM transmission over 4160-km SSMF," J. Lightw. Technol. 26, 6-15 (2008).

M. Schuster, S. Randel, C. A. Bunge, S. C. J. Lee, F. Breyer, B. Spinnler, K. Petermann, "Spectrally efficient compatible single-sideband modulation for OFDM transmission with direct detection," IEEE Photon. Technol. Lett. 20, 670-672 (2008).

Y. Tang, K. P. Ho, W. Shieh, "Coherent optical OFDM transmitter design employing predistortion," IEEE Photon. Technol. Lett. 20, 954-956 (2008).

A. J. Lowery, "Amplified-spontaneous noise limit of optical OFDM lightwave systems," Opt. Exp. 16, 860-865 (2008).

2007 (3)

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

Y. Tang, W. Shieh, X. Yi, R. Evans, "Optimum design for RF-to optical up-converter in coherent optical OFDM systems," IEEE Photon. Technol. Lett. 19, 483-485 (2007).

W. Shieh, "PMD-supported coherent optical OFDM systems," IEEE Photon. Technol. Lett. 19, 134-136 (2007).

2004 (1)

J. Wang, J. M. Kahn, "Impact of chromatic and polarization mode dispersions on DPSK systems using interferometric demodulation and direct detection," J. Lightw. Technol. 22, 362-371 (2004).

1999 (1)

M. Sieben, J. Conradi, D. E. Dodds, "Optical single sideband transmission at 10 Gbps using only electrical dispersion compensation," J. Lightw. Technol. 17, 1742-1749 (1999).

1970 (1)

V. Cizek, "Discrete Hilbert transform," IEEE Trans. Audio Electroacoust. 18, 340-343 (1970).

IEEE Photon. Technol. Lett. (1)

Y. Tang, W. Shieh, X. Yi, R. Evans, "Optimum design for RF-to optical up-converter in coherent optical OFDM systems," IEEE Photon. Technol. Lett. 19, 483-485 (2007).

IEEE Photon. Technol. Lett. (3)

Y. Tang, K. P. Ho, W. Shieh, "Coherent optical OFDM transmitter design employing predistortion," IEEE Photon. Technol. Lett. 20, 954-956 (2008).

W. Shieh, "PMD-supported coherent optical OFDM systems," IEEE Photon. Technol. Lett. 19, 134-136 (2007).

M. Schuster, S. Randel, C. A. Bunge, S. C. J. Lee, F. Breyer, B. Spinnler, K. Petermann, "Spectrally efficient compatible single-sideband modulation for OFDM transmission with direct detection," IEEE Photon. Technol. Lett. 20, 670-672 (2008).

IEEE Trans. Audio Electroacoust. (1)

V. Cizek, "Discrete Hilbert transform," IEEE Trans. Audio Electroacoust. 18, 340-343 (1970).

J. Lightw Technol. (1)

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

J. Lightw. Technol. (1)

S. L. Jansen, I. Morita, T. C. W. Schenk, N. Takeda, H. Tanaka, "Coherent optical 25.8-Gb/s OFDM transmission over 4160-km SSMF," J. Lightw. Technol. 26, 6-15 (2008).

J. Lightw. Technol. (3)

M. Sieben, J. Conradi, D. E. Dodds, "Optical single sideband transmission at 10 Gbps using only electrical dispersion compensation," J. Lightw. Technol. 17, 1742-1749 (1999).

J. Wang, J. M. Kahn, "Impact of chromatic and polarization mode dispersions on DPSK systems using interferometric demodulation and direct detection," J. Lightw. Technol. 22, 362-371 (2004).

B. J. C. Schmidt, A. J. Lowery, J. Armstrong, "Experimental demonstrations of electronic dispersion compensation for long-haul transmission using direct-detection optical OFDM," J. Lightw. Technol. 26, 196-203 (2008).

Opt. Exp. (1)

A. J. Lowery, "Amplified-spontaneous noise limit of optical OFDM lightwave systems," Opt. Exp. 16, 860-865 (2008).

Opt. Exp. (1)

W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-859 (2008).

Other (12)

W. R. Peng, X. Wu, V. R. Arbab, B. Shamee, L. C. Christen, J. Y. Yang, K. M. Feng, A. E. Willner, S. Chi, "Experimental demonstration of a coherently modulated and directly detected optical OFDM system using an RF-tone insertion," Proc. Opt. Fiber Commun. Conf. (2008).

M. Mayrock, H. Haunstein, "PMD tolerant direct-detection optical OFDM system," Proc. Eur. Conf. Opt. Commun. (2007).

C. Xie, "PMD insensitive direct-detection optical OFDM systems using self-polarization diversity," Proc. Opt. Fiber Commun. Conf. (2008).

W. R. Peng, K. M. Feng, A. E. Willner, "Direct-detected polarization division multiplexed OFDM systems with self-polarization diversity," Proc. Lasers Electro-Opt. Soc. (2008).

D. F. Hewitt, "Orthogonal frequency division multiplexing using baseband optical single sideband for simpler adaptive dispersion compensation," Proc. Opt. Fiber Commun. Conf. (2007).

W. R. Peng, S. Chi, "Improving the transmission performance for an externally modulated baseband single sideband OFDM signal using nonlinear post-compensation and differential encoding schemes," Proc. Eur. Conf. Opt. Commun. (2007).

M. Schuster, C. A. Bunge, K. Petermann, B. Spinnler, "Spectrally efficient OFDM-transmission with compatible single-sideband modulation for direct detection," Proc. Eur. Conf. Opt. Commun. (2007).

R. van Nee, R. Presad, OFDM for Wireless Multimedia Communications. (Artech House, 2000).

S. L. Jansen, I. Morita, N. Takeda, H. Tanaka, "Pre-emphasis and RF-pilot tone phase noise compensation for coherent OFDM transmission systems," Proc. LEOS (2007).

W. R. Peng, X. Wu, V. R. Arbab, B. Shamee, J. Y. Yang, L. C. Christen, K. M. Feng, A. E. Willner, S. Chi, "Experimental demonstration of 340 km SSMF transmission using a virtual single sideband OFDM signal that employs carrier suppressed and iterative detection techniques," Proc. Opt. Fiber Commun. Conf. (2008).

S. L. Jansen, I. Morita, H. Tanaka, "10$\,\times\,$121.9-Gb/s PDM-OFDM transmission with 2-b/s/Hz spectral efficiency over 1 000 km of SSMF," Proc. Opt. Fiber Commun. Conf. (2008).

A. J. Lowery, "Improving sensitivity and spectra efficiency in direct-detection optical OFDM systems," Proc. Opt. Fiber Commun. Conf. (2008).

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