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Compact Mach–Zehnder interferometer based on processed hollow-core fiber for gas pressure sensing
- Source :
- Journal of Nanophotonics. 13:1
- Publication Year :
- 2019
- Publisher :
- SPIE-Intl Soc Optical Eng, 2019.
-
Abstract
- A Mach–Zehnder interferometer based on processed hollow-core fiber (HCF) is proposed and experimentally demonstrated for gas pressure sensing. The fiber sensor is fabricated by splicing a segment of HCF between the two coreless fibers. One end of the HCF is processed into an open cavity, which allows gas pressure of the air-core to be equivalent to that of the external environment. Gas pressure change induces refractive index change of the air-core, thus the measurement of gas pressure can be achieved by monitoring wavelength shift of the interference pattern. The proposed fiber sensor exhibits a high gas pressure sensitivity of 9.35 nm / MPa in the range from 0.1 to 0.04 MPa and a temperature sensitivity of 30 pm / ° C in the range from 30°C to 90°C. Furthermore, the fiber sensor processes the advantages of compactness, low cost, and all-fiber configuration, which makes it suitable for gas pressure measurement.
- Subjects :
- Materials science
business.industry
02 engineering and technology
021001 nanoscience & nanotechnology
Condensed Matter Physics
Mach–Zehnder interferometer
Cladding (fiber optics)
01 natural sciences
Electronic, Optical and Magnetic Materials
010309 optics
Interferometry
Fiber Bragg grating
0103 physical sciences
Astronomical interferometer
Optoelectronics
Fiber
0210 nano-technology
business
Refractive index
Sensitivity (electronics)
Subjects
Details
- ISSN :
- 19342608
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- Journal of Nanophotonics
- Accession number :
- edsair.doi...........c80198d07e15547d6e384b18f0102582