The paper proposes a method for localizing the location of an optical cable based on the analysis of the characteristics of a phase-sensitive reflectometer under external acoustic impact. Approbation of the methodology was carried out using a vibroacoustic monitoring system at a test site built on the territory of the university. The results of measurements of the intensity distribution of the acoustic impact along the length of the optical fiber depending on the location of the impact source are presented. The specific features of the method based on the analysis of amplitude characteristics are determined.
In this paper, an algorithm is proposed for sorting delivery lengths of optical cables according to the probability of failure and selection of the cable's lengths with the highest probability of failure on the route of the communication line section. The implementation of this algorithm is presented for two examples of cable lines built using the "micro cable-in-microtube" technology. The data obtained as a result of processing demonstrate the possibilities of applying the proposed algorithm in practice.
Following article presents a simple scheme of an acousto-optic channel and an example of the results of modeling lowspeed data transmission in such channel. Previously obtained experimental data on the amplitude-frequency response of the channel were used in the simulation. The simulation results demonstrate the advantage of using a phase receiver for the considered fiber acousto-optic channels compared to direct detection.
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