| 摘要 |
The present invention relates to an apparatus and method for mitigating the effects of polarization mode dispersion (PMD) in high speed optical signal transmission systems. The apparatus comprises a concatenation of birefringen t elements (11, 12, 16) of which at least two (11, 12) can be selectively controlled by means of a feedback device (15), and is capable of mitigating the effects of first- and second-order PMD even through the architecture use d features a limited number of control connections (11a, 12a9 and correspondin g control signals.
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