| 摘要 |
The data signal transmission method has carrier signals (ts1,ts2) modulated with data signals (ds1,ds2) via a non-return-to-zero coding and a return-to-zero coding to provide two modulated signals (ms1,ms2) with different transmission bit rates and orthogonal polarizations, combined to provide an optical multiplex signal (oms). <??>The modulated signals are extracted from the optical multiplex signal at the reception end by a polarization splitter (PBS), receiving the signal via polarization setting element (PTF) provided with a regulating signal (rs) dependent on the frequency of an electrical signal (es1,es2) obtained from one or both of the modulated signals. <??>An Independent claim for an optical transmission system is also included. |
