RESEARCH OF FOCL PARAMETERS IN THE RANGE OF POSITIVE TEMPERATURES

This article studies the parameters of fiber-optic communication lines (FOCL) in the temperature range. For research, a climatic unit has been developed that allows a wide temperature range for testing (from -90°C to + 90°C) and an experimental complex for investigating the stability of optical parameters of a fiber-optic cable with temperature changes in the range from + 18°C to + 76°C. A technology of sequential switching of optical fibers of a fiber-optic cable by means of welding is proposed, thanks to which the constructive problem of placing a long optical fiber in a limited volume of a heat chamber is solved. Measurement of changes in the attenuation of fiber-optic communication lines with a monotonic change in positive temperatures in the direction of increasing and decreasing temperature.

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