Affiliation:
1. Department of Electronics and Information Technology, Lublin University of Technology, Nadbystrzycka 38A, 20-618 Lublin, Poland
Abstract
In this article we deal with the influence of polarization on determining the bending radius in TFBG (tilted fiber Bragg grating) sensors. The spectrum of TFBG structures changes under the influence of many factors at the same time. In the case of bending radius measurements, additional factors may be the temperature and polarization state of the introduced light. So far, only the cladding mode envelope algorithm has been used to determine the bending radius. An interesting issue seems to be establishing the influence of cross-sensitivity of the spectrum on changes in polarization during bending measurements. In addition to the envelope algorithm, algorithms for spectral length and average deviation from the local mean were examined. As a result of the analysis of experimental data, it was found that the level of polarization’s influence on the result may be significant in determining the bending radius. Reducing the influence of polarization can be achieved by using algorithms providing wavelength parameters. Additionally, in order to reduce the influence of polarization, we proposed the use of the PLS (partial least squares regression) algorithm for the processed spectrum.
Funder
Lublin University of Technology
Subject
Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science
Reference24 articles.
1. Refractometric Properties of a TFBG Sensor Demodulated Using α-Shape Modified Delaunay Triangulation;Fazzi;Optics,2021
2. Cieszczyk, S., Skorupski, K., and Panas, P. (2022). Single- and Double-Comb Tilted Fiber Bragg Grating Refractive Index Demodulation Methods with Fourier Transform Pre-Processing. Sensors, 22.
3. Zhong, H., Liu, X., Fu, C., Xu, B., He, J., Li, P., Meng, Y., Du, C., Chen, L., and Tang, J. (2022). Quasi-Distributed Temperature and Strain Sensors Based on Series-Integrated Fiber Bragg Gratings. Nanomaterials, 12.
4. Rotation And Twist Measurement Using Tilted Fiber Bragg Gratings;Skorupski;Metrol. Meas. Syst.,2018
5. Dual-parameter measurements of curvature and strain using cladding-etched two-mode fiber Bragg grating;Yu;Opt. Fiber Technol.,2023