Abstract

This paper investigates the ability of electronic equalization to compensate for modal dispersion in the presence of mode coupling in multimode fibers (MMFs) at 10 Gb/s. Using a new time-domain experimental method, mode coupling is quantified in MMF. These results, together with a comprehensive link model, allow to determine the impact of mode coupling on the performance of MMF. The equalizer performance on links from 300 m to 8 km is quantified with and without modal coupling. It is shown that the mode-coupling effects are influenced by the specific index profile and increase the equalizer penalty by as much as 1 dBo for 1-km links and 2.3 dBo for 2-km links when using a standard model of fiber profiles at 1310 nm.

© 2006 IEEE

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References

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Appl. Opt. (8)

IEEE Photon. Technol. Lett. (1)

P. Pepeljugoski, D. Kuchta, Y. Wark, P. Pleunis, G. Kuyt, "15.6 Gb/s transmission over 1 km of next generation multimode fiber," IEEE Photon. Technol. Lett. 14, 717-719 (2002).

J. Lightw. Technol. (3)

Z. Haas, M. A. Santoro, "A mode-filtering scheme for improvement of the bandwidth–distance product in multimode fiber systems," J. Lightw. Technol. 11, 1125-1131 (1993).

E. G. Johnson, J. Stack, C. Koehler, "Light coupling by a vortex lens into graded index fiber," J. Lightw. Technol. 19, 753-758 (2001).

M. Webster, L. Raddatz, I. H. White, D. G. Cunningham, "A statistical analysis of conditioned launch for gigabit Ethernet links using multimode fiber," J. Lightw. Technol. 17, 1532-1541 (1999).

Other (8)

Tektronix TDS8200 Sampling Oscilloscope With Sampling Module 80E03 .

J. G. Proakis, Digital Communications (McGraw-Hill, 1995).

J. Ewen, PIE Metric Comparison: 108-Fiber & Monte Carlo Delay Sets San Antonio (2004) http://www.ieee802.org/3/aq/public/nov04/ewen_2_1104.pdfSan Antonio presented to the IEEE 802.3aq Task Force.

IEEE 802.3aq 10G-LRM Task Force http://www.ieee802.org/3/aq.

S. E. Ralph, K. M. Patel, C. Argon, A. Polley, S. W. McLaughlin, "Intelligent receivers for multimode fibers: Optical and electronic equalization of differential modal delay," Proc. LEOS (2002) pp. 295-296.

108 Fiber Model http://www.ieee802.org/3/aq/public/tools/108fiberModel.

D. Marcuse, Theory of Dielectric Optical Waveguides (Academic, 1991).

J. A. Buck, Fundamentals of Optical Fibers (Wiley, 1995).

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