Abstract

We compare the performance of several direct-detection orthogonal frequency-division multiplexing (OFDM) schemes to that of ON–OFF keying (OOK) in combating modal dispersion in multimode fiber links. We review known OFDM techniques, including dc-clipped OFDM (DC-OFDM), asymmetrically clipped optical OFDM (ACO-OFDM) and pulse-amplitude modulated discrete multitone (PAM-DMT). We describe an iterative procedure to achieve optimal power allocation for DC-OFDM and compare analytically the performance of ACO-OFDM and PAM-DMT. We also consider unipolar <i>M</i>-ary pulse-amplitude modulation (<i>M</i>-PAM) with minimum mean-square error decision-feedback equalization (MMSE-DFE). For each technique, we quantify the optical power required to transmit at a given bit rate in a variety of multimode fibers. For a given symbol rate, we find that unipolar <i>M</i>-PAM with MMSE-DFE has a better power performance than all OFDM formats. Furthermore, we observe that the difference in performance between <i>M</i>-PAM and OFDM increases as the spectral efficiency increases. We also find that at a spectral efficiency of 1 bit/s/Hz, OOK performs better than ACO-OFDM using a symbol rate twice that of OOK. At higher spectral efficiencies, <i>M</i>-PAM performs only slightly better than ACO-OFDM using twice the symbol rate, but requires less electrical bandwidth and can employ analog-to-digital converters at a speed only 81% of that required for ACO-OFDM.

© 2011 IEEE

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  1. J. M. Tang, P. M. Lane, K. A. Shore, "Transmission performance of adaptively modulated optical OFDM signals in multimode fiber links," IEEE Photon. Technol. Lett. 18, 205-207 (2006).
  2. S. Randel, F. Breyer, S. C. J. Lee, "High-speed transmission over multimode optical fibers," presented at the Opt. Fiber Commun. Conf./Collocated Natl. Fiber Opt. Eng. Conf. San DiegoCA (2008) Paper OWR2.
  3. J. M. Tang, P. M. Lane, K. A. Shore, "High-speed transmission of adaptively modulated optical OFDM signals over multimode fibers using directly modulated DFBs," J. Lightw. Technol. 24, 429-441 (2006).
  4. J. Armstrong, B. J. C. Schmidt, D. Kalra, H. A. Suraweera, A. J. Lowery, "Performance of asymmetrically clipped optical OFDM in AWGN for an intensity modulated direct detection system," Proc. IEEE Global Commun. Conf. (2006) pp. 1-5.
  5. S. C. J. Lee, S. Randel, F. Breyer, A. M. J. Koonen, "PAM-DMT for intensity-modulated and direct-detection optical communication systems," IEEE Photon. Technol. Lett. 21, 1749-1751 (2009).
  6. X. Q. Jin, J. M. Tang, P. S. Spencer, K. A. Shore, "Optimization of adaptively modulated optical OFDM modems for multimode fiber-based local area networks," J. Opt. Netw. 7, 198-214 (2008).
  7. S. C. J. Lee, F. Breyer, S. Randel, H. P. A. van den Boom, A. M. J. Koonen, "High-speed transmission over multimode fiber using discrete multitone modulation," J. Opt. Netw. 7, 183-196 (2008).
  8. M. B. Shemirani, J. M. Kahn, "Higher-order modal dispersion in graded-index multimode fiber," J. Lightw. Technol. 27, 5461-5468 (2009).
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  12. W. Yu, G. Ginis, J. M. Cioffi, "An adaptive multiuser power control algorithm for VDSL," Proc. IEEE Global Commun. Conf. (2001) pp. 394-398.
  13. P. Pepeljugoski, S. E. Golowich, A. J. Ritger, P. Kolesar, A. Risteski, "Modeling and simulation of next-generation multimode fiber links," J. Lightw. Technol. 21, 1242-1255 (2003).
  14. P. Pepeljugoski, M. J. Hackert, J. S. Abbott, S. E. Swanson, S. E. Golowich, A. J. Ritger, P. Kolesar, Y. C. Chen, P. Pleunis, "Development of system specification for laser-optimized 50-$\mu$m multimode fiber for multigigabit short-wavelength LANs," J. Lightw. Technol. 21, 1256-1275 (2003).
  15. X. Q. Jin, J. M. Tang, K. Qiu, P. S. Spencer, "Statistical investigations of the transmission performance of adaptively modulated optical OFDM signals in multimode fiber links," J. Lightw. Technol. 26, 3216-3224 (2008).
  16. X. Zheng, J. M. Tang, P. S. Spencer, "Transmission performance of adaptively modulated optical OFDM modems using subcarrier modulation over worst-case multimode fibre links," IEEE Commun. Lett. 12, 788-790 (2008).
  17. J. M. Kahn, J. R. Barry, "Wireless infrared communications," Proc. IEEE 85, 265-298 (1997).
  18. J. B. Carruthers, J. M. Kahn, "Modeling of nondirected wireless infrared channels," IEEE Trans. Commun. 45, 1260-1268 (1997).
  19. D. J. F. Barros, J. M. Kahn, "Optimized dispersion compensation using orthogonal frequency-division multiplexing," J. Lightw. Technol. 26, 2889-2898 (2008).

2009 (2)

S. C. J. Lee, S. Randel, F. Breyer, A. M. J. Koonen, "PAM-DMT for intensity-modulated and direct-detection optical communication systems," IEEE Photon. Technol. Lett. 21, 1749-1751 (2009).

M. B. Shemirani, J. M. Kahn, "Higher-order modal dispersion in graded-index multimode fiber," J. Lightw. Technol. 27, 5461-5468 (2009).

2008 (5)

X. Q. Jin, J. M. Tang, P. S. Spencer, K. A. Shore, "Optimization of adaptively modulated optical OFDM modems for multimode fiber-based local area networks," J. Opt. Netw. 7, 198-214 (2008).

S. C. J. Lee, F. Breyer, S. Randel, H. P. A. van den Boom, A. M. J. Koonen, "High-speed transmission over multimode fiber using discrete multitone modulation," J. Opt. Netw. 7, 183-196 (2008).

X. Q. Jin, J. M. Tang, K. Qiu, P. S. Spencer, "Statistical investigations of the transmission performance of adaptively modulated optical OFDM signals in multimode fiber links," J. Lightw. Technol. 26, 3216-3224 (2008).

X. Zheng, J. M. Tang, P. S. Spencer, "Transmission performance of adaptively modulated optical OFDM modems using subcarrier modulation over worst-case multimode fibre links," IEEE Commun. Lett. 12, 788-790 (2008).

D. J. F. Barros, J. M. Kahn, "Optimized dispersion compensation using orthogonal frequency-division multiplexing," J. Lightw. Technol. 26, 2889-2898 (2008).

2006 (2)

J. M. Tang, P. M. Lane, K. A. Shore, "Transmission performance of adaptively modulated optical OFDM signals in multimode fiber links," IEEE Photon. Technol. Lett. 18, 205-207 (2006).

J. M. Tang, P. M. Lane, K. A. Shore, "High-speed transmission of adaptively modulated optical OFDM signals over multimode fibers using directly modulated DFBs," J. Lightw. Technol. 24, 429-441 (2006).

2003 (2)

P. Pepeljugoski, S. E. Golowich, A. J. Ritger, P. Kolesar, A. Risteski, "Modeling and simulation of next-generation multimode fiber links," J. Lightw. Technol. 21, 1242-1255 (2003).

P. Pepeljugoski, M. J. Hackert, J. S. Abbott, S. E. Swanson, S. E. Golowich, A. J. Ritger, P. Kolesar, Y. C. Chen, P. Pleunis, "Development of system specification for laser-optimized 50-$\mu$m multimode fiber for multigigabit short-wavelength LANs," J. Lightw. Technol. 21, 1256-1275 (2003).

1998 (1)

G. D. Forney, G. Ungerboeck, "Modulation and coding for linear Gaussian channels," IEEE Trans. Info. Theory 44, 2384-2415 (1998).

1997 (2)

J. M. Kahn, J. R. Barry, "Wireless infrared communications," Proc. IEEE 85, 265-298 (1997).

J. B. Carruthers, J. M. Kahn, "Modeling of nondirected wireless infrared channels," IEEE Trans. Commun. 45, 1260-1268 (1997).

1995 (1)

J. M. Cioffi, G. P. Dudevoir, M. V. Eyuboglu, G. D. Forney, Jr"MMSE decision-feedback equalizers and coding—Part II: Coding results," IEEE Trans. Commun. 43, 2595-2604 (1995).

IEEE Commun. Lett. (1)

X. Zheng, J. M. Tang, P. S. Spencer, "Transmission performance of adaptively modulated optical OFDM modems using subcarrier modulation over worst-case multimode fibre links," IEEE Commun. Lett. 12, 788-790 (2008).

IEEE Photon. Technol. Lett. (2)

J. M. Tang, P. M. Lane, K. A. Shore, "Transmission performance of adaptively modulated optical OFDM signals in multimode fiber links," IEEE Photon. Technol. Lett. 18, 205-207 (2006).

S. C. J. Lee, S. Randel, F. Breyer, A. M. J. Koonen, "PAM-DMT for intensity-modulated and direct-detection optical communication systems," IEEE Photon. Technol. Lett. 21, 1749-1751 (2009).

IEEE Trans. Commun. (2)

J. B. Carruthers, J. M. Kahn, "Modeling of nondirected wireless infrared channels," IEEE Trans. Commun. 45, 1260-1268 (1997).

J. M. Cioffi, G. P. Dudevoir, M. V. Eyuboglu, G. D. Forney, Jr"MMSE decision-feedback equalizers and coding—Part II: Coding results," IEEE Trans. Commun. 43, 2595-2604 (1995).

IEEE Trans. Info. Theory (1)

G. D. Forney, G. Ungerboeck, "Modulation and coding for linear Gaussian channels," IEEE Trans. Info. Theory 44, 2384-2415 (1998).

J. Lightw. Technol. (6)

P. Pepeljugoski, S. E. Golowich, A. J. Ritger, P. Kolesar, A. Risteski, "Modeling and simulation of next-generation multimode fiber links," J. Lightw. Technol. 21, 1242-1255 (2003).

P. Pepeljugoski, M. J. Hackert, J. S. Abbott, S. E. Swanson, S. E. Golowich, A. J. Ritger, P. Kolesar, Y. C. Chen, P. Pleunis, "Development of system specification for laser-optimized 50-$\mu$m multimode fiber for multigigabit short-wavelength LANs," J. Lightw. Technol. 21, 1256-1275 (2003).

X. Q. Jin, J. M. Tang, K. Qiu, P. S. Spencer, "Statistical investigations of the transmission performance of adaptively modulated optical OFDM signals in multimode fiber links," J. Lightw. Technol. 26, 3216-3224 (2008).

D. J. F. Barros, J. M. Kahn, "Optimized dispersion compensation using orthogonal frequency-division multiplexing," J. Lightw. Technol. 26, 2889-2898 (2008).

M. B. Shemirani, J. M. Kahn, "Higher-order modal dispersion in graded-index multimode fiber," J. Lightw. Technol. 27, 5461-5468 (2009).

J. M. Tang, P. M. Lane, K. A. Shore, "High-speed transmission of adaptively modulated optical OFDM signals over multimode fibers using directly modulated DFBs," J. Lightw. Technol. 24, 429-441 (2006).

J. Opt. Netw. (2)

Proc. IEEE (1)

J. M. Kahn, J. R. Barry, "Wireless infrared communications," Proc. IEEE 85, 265-298 (1997).

Other (4)

W. Yu, G. Ginis, J. M. Cioffi, "An adaptive multiuser power control algorithm for VDSL," Proc. IEEE Global Commun. Conf. (2001) pp. 394-398.

J. Campello, "Optimal discrete bit loading for multicarrier modulation systems," presented at the IEEE Symp. Info. Theory CambridgeMA (1998).

J. Armstrong, B. J. C. Schmidt, D. Kalra, H. A. Suraweera, A. J. Lowery, "Performance of asymmetrically clipped optical OFDM in AWGN for an intensity modulated direct detection system," Proc. IEEE Global Commun. Conf. (2006) pp. 1-5.

S. Randel, F. Breyer, S. C. J. Lee, "High-speed transmission over multimode optical fibers," presented at the Opt. Fiber Commun. Conf./Collocated Natl. Fiber Opt. Eng. Conf. San DiegoCA (2008) Paper OWR2.

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