TY - JOUR N2 - The main objective of this work is to characterize the performance of an interferometric fibre sensor which has been designed in order to register rotational phenomena, both in seismological observatories and engineering constructions. It is based on a well-known Sagnac effect which enables to detect one-axis rotational motions in a direct way and without any reference system. The presented optical fibre sensor – FOSREM allows to measure a component of rotation in a wide range of signal amplitude form 10–8 rad/s to 10 rad/s, as well as frequency from 0 Hz to the upper frequency from 2.56 Hz to 328.12 Hz. The laboratory investigation of our system indicated that it keeps theoretical sensitivity equal to 2·10–8 rad/s/Hz1/2 and accuracy no less than 3·1–8 to 1.6·10–6 rad/s in the above mentioned frequency band. Moreover, system size that equals 0.36×0.36×0.16 m and opportunity to remotely control the system via Internet by special server make FOSREM a mobile and autonomous device. L1 - http://journals.pan.pl/Content/116100/PDF-MASTER/pan_doi_blank.pdf L2 - http://journals.pan.pl/Content/116100 PY - 2016 IS - No 3 EP - 143 KW - torsional effects KW - interferometer KW - sensor KW - engineering construction KW - rotational seismology A1 - Kurzych, A. A1 - Kowalski, Jerzy K. A1 - Sakowicz, Bartosz A1 - Krajewski, Z. A1 - Jaroszewicz, L.R. PB - Polish Academy of Sciences (under the auspices of the Committee on Electronics and Telecommunication) and Association of Polish Electrical Engineers in cooperation with Military University of Technology VL - vol. 24 DA - 26.07.2016 T1 - The laboratory investigation of the innovative sensor for torsional effects in engineering structures’ monitoring SP - 134 UR - http://journals.pan.pl/dlibra/publication/edition/116100 T2 - Opto-Electronics Review ER -