Modulator device for generating an optical transfer signal modulated by means of a binary signal

Through the frequency modulation and amplitude modulation device of the series circuit generate very narrow band the transmission signal ls. Frequency modulator and at least largely inhibiting carrier wave signal of ts modulation index and the amplitude modulation device through the following methods of inhibiting of the spectrum frequency of the broad band part and the amplitude of the frequency shift keying period of transmission signal ls blanking.