Modal interference fiber optic sensor

Marcin Kondrat; Mieczyslaw Szustakowski; Andrzej Gorka; Norbert Palka; Marek Zyczkowski; Sylwester Niznik

doi:10.1117/12.578196

30 November 2004 Modal interference fiber optic sensor

Marcin Kondrat, Mieczyslaw Szustakowski, Andrzej Gorka, Norbert Palka, Marek Zyczkowski, Sylwester Niznik

Proceedings Volume 5611, Unmanned/Unattended Sensors and Sensor Networks; (2004) https://doi.org/10.1117/12.578196
Event: European Symposium on Optics and Photonics for Defence and Security, 2004, London, United Kingdom

Abstract

Modal Interference Fiber Optic Sensor (MIFOS) for permanent monitoring of the network is presented. A mechanical disturbance of a fiber cable influences on intensity distribution at the end-face of a multimode fiber. Variations in interfering images are analysed by means of a digital processing unit that determines the alarm in case of unauthorized access along the whole length of the fiber. A contrast of an interference pattern and a procedure of fiber optic selection for the sensor are shown. A simple criterion that bases on changes of local maximums positions of the interference patterns is applied. A laboratory arrangement of the sensor and its experimental research are shown.

Citation Download Citation

Marcin Kondrat, Mieczyslaw Szustakowski, Andrzej Gorka, Norbert Palka, Marek Zyczkowski, and Sylwester Niznik "Modal interference fiber optic sensor", Proc. SPIE 5611, Unmanned/Unattended Sensors and Sensor Networks, (30 November 2004); https://doi.org/10.1117/12.578196

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