Temperature and strain sensing characteristics of the tilted fiber Bragg grating |
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Authors: | ZHANG Wei-hua |
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Affiliation: | (1) IFAC-CNR, Via Madonna del Piano 10, 50019 Sesto Fiorentino, FI, Italy;(2) Department Information Engineering, University of Siena, Via Roma 56, 53100 Siena, Italy |
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Abstract: | Theoretical and experimental studies on the tilted fiber Bragg grating (TFBG) temperature and strain sensing characteristics are conducted. The TFBG is stuck to the surface of the beam along the axis direction. When the free end of the beam is forced, both the strain and temperature will induce wavelength shifts. The temperature characteristic of TFBG cladding modes is similar to that of the core mode while the strain characteristics of TFBG core mode and cladding modes are different. A novel method to discriminate the temperature and strain simultaneously is put forward based on TFBG sensing characteristics. |
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