Comparison of Methods for Vibration Detection Using Single-Mode Optical Fiber to Ensuring Information Security

  • 1 Brno University of Technology, FEEC, Dept. of Telecommunications, Technicka 12, 616 00 Brno, Czech Republic


The paper focuses on the security of fiber optic infrastructures. The main purpose of the paper is present the vibration detection system for unauthorized access to the fiber optic infrastructure detection. For this purpose, measurement of vibrations using the interferometric method and the measurement based on state of polarization changes evaluation is presented. For the measurement own designed systems were used. Both systems are theoretically described and the principles of use are explained. The measurement was performed at an experimental workplace in a laboratory at the university Based on evaluation measurement both systems are compared in term of sensitivity.



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