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Fiber optic hydrogen sensor based on a Fabry–Perot interferometer with a fiber Bragg grating and a nanofilm.
- Source :
- Lab on a Chip; 5/7/2021, Vol. 21 Issue 9, p1752-1758, 7p
- Publication Year :
- 2021
-
Abstract
- Hydrogen is widely used in industrial production and clinical medicine, and as fuel. Hydrogen becomes explosive when the hydrogen–air mixture ranges from 4 to 76 vol%; thus, a rapid hydrogen concentration measurement is particularly important in practical applications. We present a novel fiber optic hydrogen sensor with fast response fabricated from a graphene–Au–Pd sandwich nanofilm and an ultrashort fiber Bragg grating. The response time is only 4.3 s at a 3.5 vol% hydrogen concentration. When the measured hydrogen concentration was increased from 0 to 4.5 vol%, the optical resonance dip in the sensor near 1550 nm shifted by 290 pm. In addition, the sensor has an insertion loss of only −2.22 dB, a spectral contrast of 10.8 dB, and a spectral finesse of 5. Such a flexible, fast-response sensor is expected to be used in the development of hydrogen sensors with low power consumption. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14730197
- Volume :
- 21
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Lab on a Chip
- Publication Type :
- Academic Journal
- Accession number :
- 150142709
- Full Text :
- https://doi.org/10.1039/d1lc00012h