| 摘要 |
A method of recovering data from an optical signal (OS) in an alternating polarization (APOL) modulation format suffering from signal distortion, e.g. Polarization Mode Dispersion (PMD), Polarization Dependent Loss (PDL) or the like, the optical signal forming a bit stream of odd and even bits (OB, EB) having a given bit rate. The method comprises splitting (6) the optical signal and/or an electrical signal (ESC, ESD) derived from the optical signal into at least two split signals (SS1, SS2). In order to mitigate distortion effects of the optical signal, the proposed method further comprises independently and adaptively controlling (10, 12) respective distortion compensating means (9, 11) provided for the at least two split signals for recovering the odd bits and the even bits, respectively.
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