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Proceedings Paper

Modal interference fiber optic sensor
Author(s): Marcin Kondrat; Mieczyslaw Szustakowski; Andrzej Gorka; Norbert Palka; Marek Zyczkowski; Sylwester Niznik
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Paper 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.

Paper Details

Date Published: 30 November 2004
PDF: 8 pages
Proc. SPIE 5611, Unmanned/Unattended Sensors and Sensor Networks, (30 November 2004); doi: 10.1117/12.578196
Show Author Affiliations
Marcin Kondrat, Military Univ. of Technology (Poland)
Mieczyslaw Szustakowski, Military Univ. of Technology (Poland)
Andrzej Gorka, Military Univ. of Technology (Poland)
Norbert Palka, Military Univ. of Technology (Poland)
Marek Zyczkowski, Military Univ. of Technology (Poland)
Sylwester Niznik, Military Univ. of Technology (Poland)


Published in SPIE Proceedings Vol. 5611:
Unmanned/Unattended Sensors and Sensor Networks
Edward M. Carapezza, Editor(s)

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