В 1934 г. американец Норман Р. Френ

В 1934 г. американец Норман Р. Френч получил патент на оптическую телефонную систему, речевые сигналы в которой передавались при помощи света по стержням чистого стекла. В 1962 г. был создан полупроводниковый лазер и фотодиод, используемые как источник и приёмник оптического сигнала

Только к 1970 г. компании Corning удалось наладить коммерческое производство волокна с низким затуханием — до 17 дБ/км, через пару лет — до 4 дБ/км.

Результаты (английский) 1:

In 1934, American Norman r. French was granted a patent for optical phone system, voice signals where transmitted using light on pure glass rods. In 1962 he was created by Semiconductor Laser and diode used as a source and receiver optical signalOnly to 1970 g. Corning managed to establish commercial production of fibers with low attenuation — up to 17 DB/km, after a couple of years — up to 4 DB/km.

Результаты (английский) 2:

In 1934, the American Norman R. Ffrench received a patent for an optical telephone system, voice signals which were transmitted by the light bars on the windows clean. In 1962, the semiconductor laser and photodiode has been created that are used as source and destination of the optical signal only in 1970 Corning's managed to establish commercial production of fibers with low attenuation - 17 dB / km, a couple of years - up to 4 dB / km.

Результаты (английский) 3:

in 1934. american norman r. french received a patent for the optical telephone system, speech signals which passed through the light on the clean glass pillars. in 1962. was created by the semiconductor laser and photodiode used as the source and receiver of optical signalonly in 1970. company corning has developed commercial production fibers with low затуханием - 17 db / km, through a few years up to 4 db / km.