Location of vibrational disturbance using a serial array of identical low-finesse fiber Fabry-Perot interferometers

Rodolfo Martínez Manuel; M. G. Shlyagin; S. V. Miridonov; J. Meyer

doi:10.1117/12.866491

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9 September 2010 Location of vibrational disturbance using a serial array of identical low-finesse fiber Fabry-Perot interferometers

Rodolfo Martínez Manuel, M. G. Shlyagin, S. V. Miridonov, J. Meyer

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Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76533U (2010) https://doi.org/10.1117/12.866491
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

Abstract

An optical fiber sensor system for location of a vibrational disturbance along the fiber is presented. The sensor system is based on a serial array of identical F-P interferometers, formed directly in the single mode SMF-28e fiber by pairs of fiber Bragg gratings with reflectivity of 0.04 % each. Interferometers were interrogated by a DFB diode laser which was intensity modulated at 10 kHz. A method for localization of a disturbed interferometer and experimental results for a serial array of 14 sensors are presented. Simple sensor configuration and the use of low-frequency components make it potentially inexpensive and suitable for applications where a continuous monitoring of long structures has to be performed for appearance of vibrations.

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Rodolfo Martínez Manuel, M. G. Shlyagin, S. V. Miridonov, and J. Meyer "Location of vibrational disturbance using a serial array of identical low-finesse fiber Fabry-Perot interferometers", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76533U (9 September 2010); https://doi.org/10.1117/12.866491

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