Polymer Optical Fiber Bragg Gratings in CYTOP Fibers for Angle Measurement with Dynamic Compensation

• DOI: 10.3390/polym10060674
• Publication Date: 2018-06-18T14:57:11Z
• Authors: Arnaldo Leal-Junior; Antreas Theodosiou; Camilo Díaz; Carlos Marques; Maria José Pontes; Kyriacos Kalli; Anselmo Frizera-Neto
• Keywords: Hysteresis; Fiber Bragg Grating

This paper demonstrates the use of polymer optical fiber Bragg gratings (POFBGs) for angle measurements over a range different oscillatory frequencies. The POFBGs are inscribed in low-loss, cyclic transparent amorphous fluoropolymers (CYTOP) and imprinted using direct-write, plane-by-plane femtosecond laser inscription method. As has viscoelastic response given that Young's modulus depends on frequency, compensation technique sensor frequency cross-sensitivity hysteresis is proposed verified. Results show able to provide root mean squared error (RMSE) reduction 44%, RMSE as low 2.20° was obtained when compared with reference potentiometer. provided by 55%, <0.01. results presented this can pave way movement analysis POFBG providing higher sensitivity large motion