Degree-of-polarization and eye-closure penalty associated with optical signals with orthogonal polarizations |
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Authors: | W Shieh R Hui X Yi |
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Affiliation: | Dept. of Electr. & Electron. Eng., Univ. of Melbourne, Australia; |
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Abstract: | We perform a systematic measurement of the degree-of-polarization (DOP) and eye-closure penalty for optical signals with orthogonal polarizations. We find that the symmetry of DOP is maintained for the orthogonal polarizations under both first and higher order polarization-mode dispersion (PMD), whereas the symmetry of eye-closure penalty is broken under second-order PMD. An orthogonal polarization pair can have large disparity of eye-closure penalty despite an identical DOP. We also demonstrate a novel approach to estimate the maximum eye-closure penalty asymmetry with three orthogonal polarizations on the Poincare/spl acute/ sphere. |
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