Abstract

We experimentally compare various adaptive algorithms that use a spatial light modulator (SLM) to compensate modal dispersion in 50-$\mu$m graded-index multimode fibers. We show that continuous-phase sequential coordinate ascent (CPSCA) gives better bit-error-ratio performance than 2- or 4-phase sequential coordinate ascent, in concordance with simulations in . We then evaluate the bandwidth characteristics of CPSCA, and show that a single SLM is able to simultaneously compensate the modal dispersion in up to 9 wavelength-division-multiplexed 10-Gb/s channels, spaced by 50 GHz, over a total bandwidth of 450GHz. We also show that CPSCA is able to compensate for modal dispersion in fibers up to 2.2 km long, even in the presence of midspan connector offsets up to 4 $\mu$m (simulated in experiment by offset splices). A known non-adaptive launching technique using a fusion-spliced single-mode-to-multimode patchcord is shown to fail under these conditions.

© 2009 IEEE

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  1. G. P. Agrawal, Fiber-Optic Communications Systems (Wiley, 2002).
  2. S. Fan, J. M. Kahn, "Principal modes in multi-mode waveguides," Opt. Lett. 30, 135-137 (2005).
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  4. H. Wu, J. A. Tierno, P. Pepeljugoski, J. Schaub, S. Gowda, J. A. Kash, A. Hajimiri, "Integrated transversal equalizers in high-speed fiber-optic systems," IEEE J. Solid-State Circuits 38, 2131-2137 (2003).
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  9. R. A. Panicker, J. P. Wilde, J. M. Kahn, D. F. Welch, I. Lyubomirsky, "10$\,\times\,$10 Gb/s DWDM transmission through 2.2 km multimode fiber using adaptive optics," IEEE Photon. Technol. Lett. 19, 1154-1156 (2007).
  10. R. A. Panicker, J. M. Kahn, "Algorithms for compensation of multimode fiber dispersion using adaptive optics," J. Lightw. Technol. (2007).
  11. S. Cornelissen, T. G. Bifano, P. A. Bierden, "MEMS spatial light modulators with integrated electronics," Proc. SPIE 4561, 28-34 (2001).
  12. D. H. Sim, Y. Takushima, Y. C. Chung, "Transmission of 10-Gb/s and 40-Gb/s signals over 3.7 km of multimode miber using mode-field matched center launching technique," Proc. OFC/NFOEC 2007 (2007).

2008 (1)

R. A. Panicker, J. M. Kahn, S. P. Boyd, "Compensation of multimode fiber dispersion using adaptive optics via convex optimization," J. Lightw. Technol. 26, 1295โ€“1305 (2008).

2007 (2)

R. A. Panicker, J. P. Wilde, J. M. Kahn, D. F. Welch, I. Lyubomirsky, "10$\,\times\,$10 Gb/s DWDM transmission through 2.2 km multimode fiber using adaptive optics," IEEE Photon. Technol. Lett. 19, 1154-1156 (2007).

R. A. Panicker, J. M. Kahn, "Algorithms for compensation of multimode fiber dispersion using adaptive optics," J. Lightw. Technol. (2007).

2005 (2)

2003 (1)

H. Wu, J. A. Tierno, P. Pepeljugoski, J. Schaub, S. Gowda, J. A. Kash, A. Hajimiri, "Integrated transversal equalizers in high-speed fiber-optic systems," IEEE J. Solid-State Circuits 38, 2131-2137 (2003).

2002 (1)

X. Zhao, F. S. Choa, "Demonstration of 10-Gb/s transmissions over 1.5-km-long multimode fiber using equalization techniques," IEEE Photon. Technol. Lett. 14, 1187-1189 (2002).

2001 (1)

S. Cornelissen, T. G. Bifano, P. A. Bierden, "MEMS spatial light modulators with integrated electronics," Proc. SPIE 4561, 28-34 (2001).

IEEE J. Solid-State Circuits (1)

H. Wu, J. A. Tierno, P. Pepeljugoski, J. Schaub, S. Gowda, J. A. Kash, A. Hajimiri, "Integrated transversal equalizers in high-speed fiber-optic systems," IEEE J. Solid-State Circuits 38, 2131-2137 (2003).

IEEE Photon. Technol. Lett. (2)

X. Zhao, F. S. Choa, "Demonstration of 10-Gb/s transmissions over 1.5-km-long multimode fiber using equalization techniques," IEEE Photon. Technol. Lett. 14, 1187-1189 (2002).

R. A. Panicker, J. P. Wilde, J. M. Kahn, D. F. Welch, I. Lyubomirsky, "10$\,\times\,$10 Gb/s DWDM transmission through 2.2 km multimode fiber using adaptive optics," IEEE Photon. Technol. Lett. 19, 1154-1156 (2007).

J. Lightw. Technol. (2)

R. A. Panicker, J. M. Kahn, "Algorithms for compensation of multimode fiber dispersion using adaptive optics," J. Lightw. Technol. (2007).

R. A. Panicker, J. M. Kahn, S. P. Boyd, "Compensation of multimode fiber dispersion using adaptive optics via convex optimization," J. Lightw. Technol. 26, 1295โ€“1305 (2008).

Opt. Lett. (2)

Proc. SPIE (1)

S. Cornelissen, T. G. Bifano, P. A. Bierden, "MEMS spatial light modulators with integrated electronics," Proc. SPIE 4561, 28-34 (2001).

Other (4)

D. H. Sim, Y. Takushima, Y. C. Chung, "Transmission of 10-Gb/s and 40-Gb/s signals over 3.7 km of multimode miber using mode-field matched center launching technique," Proc. OFC/NFOEC 2007 (2007).

G. P. Agrawal, Fiber-Optic Communications Systems (Wiley, 2002).

J. G. Proakis, Digital Communications (McGraw-Hill, 2001).

E. Alon, V. Stojanovic, J. M. Kahn, S. P. Boyd, M. A. Horowitz, "Equalization of modal dispersion in multimode fiber using spatial light modulators," Proc. Global Telecommun. Conf. (2004) pp. 1023-1029.

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