Optical telecommunication method providing a transmitting and receiving service channel

摘要: A digital optical telecommunication method comprising the steps of: generating a modulated signal in an transmitting station, which corresponds to first electric input carrying piece of information; feeding optical-fibre line; receiving transmitted from line at converting it form and thereat second signal; wherein is coded sequence elementary information units frequency step comprises detecting said converted signal, having higher than recognizing detected phase by comparing received with least one reference verifying their correspondence predetermined condition.