Temperature-insensitive pressure transducer based on reflected broadened spectrum with enhanced sensitivity

Pasting of half the grating of an FBG sensor on a natural rubber diaphragm was used to sense the pressure measurement. The pressure-induced strain on half of the grating resulted in bandwidth broadening. From the pressure range of 0 kPa to 20 kPa, the pressure sensitivity at 15 dB bandwidth changed...

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Main Authors: Vorathin, E., Z. M., Hafizi, A. M., Aizzuddin, K. S., Lim
格式: Article
語言:English
出版: Elsevier 2019
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在線閱讀:http://umpir.ump.edu.my/id/eprint/24265/1/Temperature-insensitive%20pressure%20transducer%20based%20on%20reflected.pdf
http://umpir.ump.edu.my/id/eprint/24265/
https://doi.org/10.1016/j.sna.2019.01.028
https://doi.org/10.1016/j.sna.2019.01.028
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機構: Universiti Malaysia Pahang Al-Sultan Abdullah
語言: English
實物特徵
總結:Pasting of half the grating of an FBG sensor on a natural rubber diaphragm was used to sense the pressure measurement. The pressure-induced strain on half of the grating resulted in bandwidth broadening. From the pressure range of 0 kPa to 20 kPa, the pressure sensitivity at 15 dB bandwidth changed was obtained at 77.7 pm/kPa with 99.94% of linearity. Through total reflected power monitoring via photodetector, the pressure transducer retrieved a sensitivity of 0.1686 dB m/kPa and evaded a complex demodulation technique. As a result of the temperature-independent bandwidth change, the pressure transducer was totally temperature insensitive.