| 摘要 |
The method involves dividing the optical data signal into n identical data sub-signals, adding an optical binary auxiliary signal of the same bit rate and phase as the sub-signal and with a higher level nth bit to each sub-signal, where the auxiliary signals are mutually shifted by one bit, to produce n summation signals that are each fed to a decision stage that outputs an electrical data signal with a bit rate 1/n times that of the data signal. The method involves dividing the optical data signal (ODS) into n identical data sub-signals (DTSi), adding an optical binary auxiliary signal (OHSi) of the same bit rate and phase as the data sub-signal and with a higher level nth bit to each sub-signal, whereby the auxiliary signals are mutually shifted by one bit, to produce n summation signals (OSUMi) that are each fed to a decision stage (ESi) that outputs an electrical data signal (EDSi) with a bit rate 1/n times that of the data signal.
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