METHOD OF DETERMINING THE LENGTH OF THE AMPLIFYING SECTION BY FOUR-WAVE MIXING FOR THE LINE BASED ON THE STANDARD FIBER

Abstract

The method for determining the length of the amplifying section limited by the four-wave mixing for the optical line based on the standard single-mode optical fiber, for the transmission system with the spectral sealing of the channels is developed. There obtained the equation for determining the length of the amplifying section of the fiber-optic transmission system, where the parameters of the transmitting optical module, parameters of the linear path of the transmission system and parameters of the quantum fiber optic amplifiers are related. The forms of this equation for different channels and for different intervals between channels are presented. The spectral characteristics of the difference between the levels of the gain of one quantum fiber optic amplifier and the noise power of one amplifier, which is counted on one optical channel, are determined. The dependence of the length of the amplifying section on the number of quantum fiber optic amplifiers for STM-16 and STM-64 transmission systems is established.