TY - JOUR N2 - Spectral characteristics and amplitude tunability of a long period grating with a dual- resonance inside fiber loop mirror are studied in terms of applied stress caused by elongation. Inserting the polarization controller between grating and part of polarization maintaining fiber in the loop structure enables tuning of resonance and interferometric peaks. The maximum sensitivity of demonstrated sensor is of 1.943 dB/mε for the range of 1.1–4.4 mε. Combination of these two optical components allows to measure strain in a wider range comparing with sensors based on standard long period grating. L1 - http://czasopisma.pan.pl/Content/115333/PDF/main.pdf L2 - http://czasopisma.pan.pl/Content/115333 PY - 2018 IS - No 4 EP - 328 KW - Long period grating KW - Fiber loop mirror KW - Strain sensor KW - Polarization maintaining fiber KW - Polarization controller A1 - Zawisza, R. A1 - Jaroszewicz, L.R. A1 - Mikulic, P. A1 - Bock, W.J. 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. 26 DA - 22.11.2018 T1 - An interferometric structure with a dual-resonance long period grating for strain sensing SP - 325 UR - http://czasopisma.pan.pl/dlibra/publication/edition/115333 T2 - Opto-Electronics Review ER -