<title>Unification of measurements of the average power of optical radiation in fiber optical transmission systems (FOTS)</title>

Abstract

At present rapidly developing fiber-optical transmission systems (FOTS) are progressively more used which is reflected in the development of their metrological support. One of the main characteristics of FOTS is the average power of optical radiation propagating in an optical fiber. The solution of the problem of uniformity measurements of this parameter is one of the main metrological problems in FOTS. Its solution is associated with the development of secondary and standard means of measurements of the average power of radiation, and also of the calibration chain which determines the methods and means of calibration of instruments. Now for this purpose photoelectric, pyroelectric and calorimetric receivers are widely used, and laser semiconductor sources of optical radiation and optical attenuators are applied. A new standard receiver based on high-precision calorimeter, and a new calibration chain for measurements of the average power of optical radiation for FOTS are described.