SYSTEM UND VORRICHTUNG ZUM SENDEN VON OPTISCHEN DATEN

摘要

A transmission system and a transmitter for optical signals is proposed with a laser and a modulator for modulating the signal by supplying a controlled phase optical signal having optical power modulated between low levels and high levels respectively corresponding to said first and second modulation levels of the input signal, and a phase shift within each time cell that contains a low power level and which precedes or succeeds a cell that contains a high power level and an optical pass band filter that filters the modulated signal.