POLARIZATION RECOVERY IN OPTICAL POLARIZATION SHIFT-KEYING SYSTEMS

For the first time, a solution to the problem of recovering and tracki ng the signal constellation at the receiver side for binary and octona ry digital optical transmission systems employing the modulation of po larization (POLSK) is proposed and analyzed. The affect of two recover y algorithms on the system performance is evaluated in terms of power penalty induced at P(e) = 10(-9), acquisition and tracking speed, and hardware complexity. The results show that very small penalties are ob tainable in practical situations by properly designing the recovery al gorithms.