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PMD Equalization




Henning,

In your presentation to the 802.3ae September Interim on circuit
implementation
of a polarization mode dispersion (PMD) equalizer you showed pulse responses
for 100km lengths of single mode fiber. Did you also characterize the PMD of
these fibers using an interferometric method [ref. 1] or the widely-used
Stokes
Parameter Method [ref. 2]? Can you give some additional information on the
type
of fiber used in this work? The magnitude of PMD seems larger than expected.

Thank you,

Chris

[1] Namihira, Y. and Wakabayashi, H., "Fiber Length Dependence of
Polarization
	Mode Dispersion Measurements on Long-Length Optical Fibers and Installed
	Optical Submarine Cables", J. Opt. Communications, 12, 1, p. 2-9 (1991).

[2] Poole, C. D., et. al., "Polarization Dispersion and Principal States in
a
	147-km Undersea Lightwave Cable", J. Lightwave Tech., v.6, no.7, p. 1185-
	90 (1988).

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Christopher J. Madden, Ph.D.                    3900 Freedom Circle, Suite
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Principal Engineer/Scientist                             Santa Clara, CA
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cmadden@tripath.com
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