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In this research fiber Bragg grating (FBG) sensor for hydrogen detection is presented, especially in leakage cases. Results watch that the presented sensor is unbeatable in compared with the others technologies for hydrogen detection. Resolution, calibration, life time and response time of such sensor are investigating. Precisely in the 0.1%–4% H2 range, we found more than 60pm/1% H2 as resolution...
A novel two-dimensional (2-D) accelerometer based on three fiber Bragg gratings (FBGs) has been developed. Both the magnitude and the direction of the acceleration can be detected simultaneously. Preliminary experimental results show that high sensitivity of 1.23 nm/(m??s-2) and resolution of 0.0008 m/s2 have been achieved. Furthermore, it is insensitive to temperature variations.
We report on the experimental comparison of piezoresistive MEMS sensors and optical fiber Bragg grating sensors (FBGS) for strain measurements in force sensors. To our knowledge, this is the first direct comparison of piezoresistive and FBG transducers as force sensors. Cantilevers are used as deformation elements. The sensors are bonded on top and bottom side of the cantilever using a heat-curing...
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