Abstract

Polarization mode dispersion (PMD) compensator already proven in field at 40 Gb/s is the so called “simple PMD compensator” (SPMDC) with a signal processing part formed by a polarization controller and a polarization maintaining fiber (PMF) attached at the output port.1 For NRZ signal it extends the PMD limit from about 15 percent of the bit period to 30 percent corresponding to 3.8 ps and 7.5 ps for 40 Gb/s signal, respectively. In order to increase the PMD limit, more complex signal processing structures have been proposed like cascaded SPMDCs2,3 or the additional incorporation of tunable chromatic dispersion elements.4,2 Nevertheless the adaptation of a multi degree-of-freedom (DOF) processor in a sufficiently short time is a demanding task which is not easy to realize.

© 2002 Optical Society of America

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References

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