The article improves the efficiency of counteracting unauthorised access by using algorithms and a protocol for monitoring information security in fibre-optic transmission systems and access networks with the help of the proposed software, which functions as part of a combined (hardware and software) method of protecting optical information flows in FOCLs. The principles of building network protocols are investigated. The functionality of the developed algorithms and the protocol for monitoring the information security of fibre-optic transmission systems is substantiated. The algorithms for stopping and restoring the transmission mode for the subscriber and linear sections of the optical network based on GPON and GEPON technologies, as well as the protocol for monitoring the information security of fibre-optic transmission systems are developed. The practical significance of the work is to improve information security through the use of a combined security control tool that operates on the basis of the developed algorithms and the information security control protocol.
The developed method of optimal design of flexible optical networks takes into account various factors and goals to ensure efficient use of resources, high performance, scalability, and adaptability. A mathematical model is developed to determine the key parameters of the fiber optic linear network route. The topology of the route of a fiber-optic linear network based on the proposed matrix model is proposed. An algorithm for using the matrix model of parameters based on the proposed variant of the fiber-optic linear network route is developed. The application of a systematic approach using the proposed method will allow network designers to achieve optimal design of flexible optical networks that efficiently use resources, provide high performance, as well as scalability and adaptability necessary for future growth and technological progress.
KEYWORDS: Digital signal processing, Signal processing, Fiber optics, Telecommunications, Statistical analysis, Signal attenuation, Analog electronics, Analytical research, Phase shift keying, Fourier transforms
The high-performance methods of multi-stage digital processing of linear signals of fiber optic transmission systems in the spectral and time domain with the use of Fourier transform methods are proposed. Based on the proposed methods of signal processing, a digital device for restoring of linear signals in fiber-optic transmission systems is developed. The advantage of the device is high performance, which enables digital processing of linear signals in the spectral region without loss of information.
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