METHOD FOR THE SYNCHRONISED KEYING OF THE POLARISATION STATE OF AN OPTICAL SIGNAL IN AN OPTICAL TRANSMISSION SYSTEM WITH HETERODYNE RECEPTION, AND DEVICE FOR CARRYING OUT THE METHOD
摘要
<p>In the polarisation scrambling method for compensating polarisation fluctuations of a transmitted optical signal for an optical transmission system with heterodyne reception, the polarisation state of the transmitted optical signal is generally keyed several times during one bit period of this signal and thus very frequently. A novel polarisation scrambling method is specified in which keying is necessary less frequently. For this purpose, the keying of the polarisation state is carried out synchronously with the clock of the transmitted optical signal and the respective keying time is placed at the bit centre so that keying is necessary only once per bit period. A device for carrying out the method is described. Application for optical transmission systems with heterodyne reception <IMAGE></p>
