Regenerators of binary pulses for optical communication systems

Regenerators of binary pulses are considered for optical communication systems, taking into account the particular characteristics of binary data transmission over optical cables in the primary network of the Unified Automated USSR Communication System as well as the various forms of binary pulse signals (pulse-keyed) and the various methods of their reception now in use worldwide. Linear filtration, optimally with zero threshold, or time filtration of signals for extraction of binary pulses from noise of any origin (mainly shot or thermal) and with any distribution (mainly normal or Poisson) is proposed as a means of ensuring high interference immunity and reliability of these regenerators. An additional advantage is the possibility of error monitoring without shutdown of communication. It is also possible to maximize the range of regenerator effectiveness, i.e., the distance between regenerators necessary for attaining the ultimate interference immunity level of optical communication over cables or over atmospheric and space channels.