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Microfiber sensor probe integrated with a cascaded Fabry-Perot interferometer.
- Source :
-
Applied optics [Appl Opt] 2021 Sep 20; Vol. 60 (27), pp. 8226-8230. - Publication Year :
- 2021
-
Abstract
- Developing micrometer-nanometer size optical fiber sensors has promising application prospects in microenvironments, such as biological cells, micro robots, and microfluids. We propose a new strategy to fabricate a microfiber sensor probe (MSP). A femtosecond laser was applied to integrate cascaded Fabry-Perot interferometers (FPIs) into a silica microfiber. And a MSP with diameter of ∼8µ m , extinction ratio of 15 dB, fitness of 24.6, and Q-factor of 2310 was demonstrated in the experiment. In addition, the MSP was applied for the refractive index and thermal measurement and the sensitivity was observed to be 10 pm/°C and 18.5 nm/RIU. The two-beam approximation model was applied to analyze the spectrum, and simulations were taken to research the refractive index sensitivity influenced by the fiber size.
Details
- Language :
- English
- ISSN :
- 1539-4522
- Volume :
- 60
- Issue :
- 27
- Database :
- MEDLINE
- Journal :
- Applied optics
- Publication Type :
- Academic Journal
- Accession number :
- 34612918
- Full Text :
- https://doi.org/10.1364/AO.434019