EINHEIT ZUR ERZEUGUNG VON SIGNALPULSEN, SOWIE SENDER UND ÜBERTRAGUNGSSYSTEM DAMIT

摘要

A unit for generating signal pulses. comprises a first, pulsed laser for supplying a pulse series having a pulse period T and a wavelength lambda 1, and a modulation unit comprising a second laser. The second laser has a wavelength band which is different from lambda 1 and can be modulated at a modulation period T in accordance with a data signal to be transported. The radiation from the second laser ) can be injected into the first laser at instants for which it holds that E(Pm)>E(LPi), in which E(Pm) is the radiation energy of the second laser injected into the first laser at the relevant instant and E(LPi) is the radiation energy built up in the first laser at the relevant instant. Moreover, the unit comprises a wavelength discriminator which selects the pulses of wavelength lambda 1 from the radiation emitted by the first laser after injection.