Physical fiber security by the state of polarization change detection

Adrian Tomasov; Petr Dejdar; Tomas Horvath; Petr Munster

doi:10.1117/12.2618490

27 May 2022 Physical fiber security by the state of polarization change detection

Adrian Tomasov, Petr Dejdar, Tomas Horvath, Petr Munster

Proceedings Volume 12105, Fiber Optic Sensors and Applications XVIII; 1210507 (2022) https://doi.org/10.1117/12.2618490
Event: SPIE Defense + Commercial Sensing, 2022, Orlando, Florida, United States

Abstract

The main topic of this paper is the detection state of polarization changes to enhance data security in fiber cable paths. The changes are generated by fiber manipulation or movements, which suggest potential security threats. Our designed system detects these changes using a polarization beam splitter and a pair of photodetectors. The values are subtracted from each other, sampled, and sent for analysis. The software detector applies FFT onto the signal and normalizes the output. The last step compares the sum of the bottom eighth of the spectrum against the threshold.

Conference Presentation

Citation Download Citation

Adrian Tomasov, Petr Dejdar, Tomas Horvath, and Petr Munster "Physical fiber security by the state of polarization change detection", Proc. SPIE 12105, Fiber Optic Sensors and Applications XVIII, 1210507 (27 May 2022); https://doi.org/10.1117/12.2618490

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