16 May 2017 Construction and laboratory test of the fiber optic rotational seismograph FOSREM for rotational seismology area of interest
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Abstract
A relatively young field of study named Rotational Seismology caused a highly interest in an investigation of rotational movements generated by earthquakes, explosions, and ambient vibrations. It includes a wide range of scientific branches. However, this field needs to apply appropriate rotational sensors which should fulfill restrict technical requirements. The presented in this work system FOSREM (Fibre-Optic System for Rotational Events and Phenomena Monitoring) seems to be a promising rotational sensor for such investigation. FOSREM works by measuring the Sagnac effect and generally consists of two basic elements: optical sensor and electronic part. Regarding to its theoretical sensitivity equals 2·10-8 rad/s/Hz1/2, it enables to measure rotation in a wide range of signal amplitude (10-8 rad/s ÷ 10 rad/s) and frequency (DC ÷ 328.12 Hz). Moreover, FOSREM is mobile and remotely controlled via Internet using a special designed software.
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Anna Kurzych, Anna Kurzych, Leszek R. Jaroszewicz, Leszek R. Jaroszewicz, Jerzy K. Kowalski, Jerzy K. Kowalski, } "Construction and laboratory test of the fiber optic rotational seismograph FOSREM for rotational seismology area of interest", Proc. SPIE 10231, Optical Sensors 2017, 102311P (16 May 2017); doi: 10.1117/12.2265590; https://doi.org/10.1117/12.2265590
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