摘要:
Two data signals (DSl, DS2) are subjected to a binary differential phase modulation and transmitted as POLMUX multiplex signals (PMS). The types of modulation are selected in such a way that they are orthogonal in relation to each other and do not influence each other during the demodulation of the signals. There is thus no need to regulate the polarisation on the receiving side.
摘要:
Binary signals (A, B, C, D) are converted at the transmission end into two optical signals (QPS1, QPS2) which are combined into a polarization multiplex signal (PMS) and are then transmitted. The transmitted polarization multiplex signal (PMS) is divided at the receiving end into two polarized signal parts (PS1, PS2) which are converted in a linear manner into orthogonal electrical components (I1, Q1; I2, Q2) and are supplied to a multidimensional filter (16). Said multidimensional filter (16) replaces a polarization controller, restores the signal values (I11 + jQ11; I12 + jQ12) that correspond to the signals (QPS1, QPS2) at the transmission end, and compensates signal distortions.