METHOD OF CONDUCTING RESOURCE TESTS OF A FIBER-OPTIC COMMUNICATION LINE AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2019 - IPC G02B6/44 

FIELD: fiber-optic communication lines.

SUBSTANCE: group of inventions relates to fiber-optic communication lines and is intended for their resource and climatic tests. Disclosed method of conducting resource tests of a fiber-optic communication line involves laying a sample of an optical cable inside a steel pipe, wherein ends of the optical cable extend from the steel pipe, then steel pipe is placed in climatic chamber, water is poured into it and ends of sample of optical cable are brought out through gateway. Means of measurements are connected to optical fibers on both sides and cable degradation is controlled, temperature of water is changed till it is frozen and influence of freezing on characteristics of optical cable is determined. Before placing steel pipe in climatic chamber there filled with soil, according to physical properties corresponding to soil in place of fiber-optic cable laying, multiple freezing and thawing of water in a steel pipe is performed, wherein the number of operations is selected based on the average number of frosts in the area of the intended operation of the optical-fiber communication line during the declared resource thereof. Disclosed device for conducting resource tests of a fiber-optic communication line comprises a climatic chamber, inside which there is a steel pipe filled with water, inside which there is a sample of an optical cable, the ends of which are brought to the measuring devices. Note here that cryogenic product spray pipeline is connected to the cavity of climatic chamber via controlled valve. Electric heaters connected via automatic circuit breaker with electric power source are also installed in said cavity.

EFFECT: faster determination of the life of a fiber-optic communication line.

6 cl, 3 dwg, 1 tbl