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A highly sensitive temperature sensor based on power change of double fiber Bragg gratings (FBGs) structure is proposed in this letter. It consists of two identical FBGs (FBG1, FBG2), in which the Bragg wavelength of FBG1 is modulated by the temperature and its reflecting light is injected into FBG2. Thus, the power difference of two peaks that appear in the transmission spectrum of FBG2 can be modulated...
The paper presents a novel single-side micromachined composite sensor, with a piezoresistive pressure sensor, a thermal-convection accelerometer and a thermometer monolithically integrated in one 2.5times2.5 mm2 chip, for low-cost production and applications such as tire-pressure monitoring systems (TPMS). The accelerometer is based on heat convection, including a micro heater and two pairs of micro...
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