Han, Young-Geun Dong, Xinyong Lee, J. H. Lee, S. B. 2024-01-21T02:05:27Z 2024-01-21T02:05:27Z 2021-09-01 2006-10-01 0146-9592 https://pubs.kist.re.kr/handle/201004/135035 We propose and experimentally demonstrate a simple and practical scheme for simultaneous measurement of bending and temperature based on a single sampled chirped fiber Bragg grating with multiple resonant peaks, which is embedded on a flexible cantilever beam. The wavelength spacing of the grating can be changed by adjusting the bending curvature change, since the compressive strain gradient induced by the bending of the cantilever beam changes the chirp ratio of the fiber grating. However, the wavelength spacing of the fiber grating is not changed by the temperature variation; the multiple resonant wavelengths are only shifted into the longer wavelength because of the positive thermal-expansion and thermo-optic coefficients of the fiber grating. Consequently, the proposed scheme allows for discrimination between two effects of bending and temperature. (c) 2006 Optical Society of America. English OPTICAL SOC AMER Simultaneous measurement of bending and temperature based on a single sampled chirped fiber Bragg grating embedded on a flexible cantilever beam Article 10.1364/OL.31.002839 1 OPTICS LETTERS, v.31, no.19, pp.2839 - 2841 OPTICS LETTERS 31 19 2839 2841 scie scopus 000240869400007 2-s2.0-33750192278 Optics Optics Article