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An experimental plant for transmission of a reference signal along a fiber-optic communication line with electronic compensation of disturbances introduced by the line is described. Results of measurements of the error associated with transmission of the 100-MHz reference signal of the hydrogen oscillator of the State Primary Standard of the Units of Time and Frequency and the National Time Scale GET 1-2012 along a 100-200 km fiber-optic communication lines are presented. [ABSTRACT FROM AUTHOR]

A prototype of a system of unilateral and bilateral comparisons of the time scales of distant objects by means of a fiber-optic communication line is described. Results of tests of the prototype and experimental investigations are presented. Errors in the comparison of the time scales and the maximal range of operation of the system are determined. [ABSTRACT FROM AUTHOR]

The article considers the development of metrological assurance in the field of measurements of the average power of optical radiation in the spectral range 0.6-1.7 μm for fiber-optic communication and information transmission systems, the creation of State Primary Special Standard GET 170-2011 of the unit of length and unit of propagation time of a signal in a waveguide, and the average power, attenuation, and wavelength for fiber-optic communication and information transmission systems. [ABSTRACT FROM AUTHOR]