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We report on a fiber sensor by combining an MZI with temperature sensitivity as high as 98.53 pm/°C and can FBG in a high Ge-doped fiber. This sensor shows a be applied in simultaneous measurement of temperature and strain.
We proposed a novel evaluation method of heat dissipation capability of the helix slow-wave structure (SWS). A distributed micro fiber Bragg grating (FBG) sensor array is designed to measure the temperature distribution of the helix in SWS. An experiment on two X-band SWSs of different heat dissipation capability is made and the results show that our method can effectively be used to estimate and...
A novel fiber Bragg grating (FBG) sensing configuration for simultaneous measurements of temperature and displacement based on a core diameter mismatch is proposed and experimentally demonstrated. The configuration is formed by a short section of thin-core fiber (TCF) followed with a single-mode fiber (SMF) tip inscribed with an FBG. The TCF excites cladding modes into downstream SMF via the mismatch...
A successful nonlinear calibration method for fiber Bragg grating (FBG) temperature sensor system based on wavelength-division multiplexing was proposed and demonstrated theoretically and experimentally. In consideration of the nonlinear relation between FBG center wavelength and temperature due to thermal expansion and thermo-optic effect, linear and nonlinear curve fittings were used to evaluate...
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