Microfiber sensor probe integrated with a cascaded Fabry–Perot interferometer
| Autor: | Hailong Wang, Chen Qi, Shenghua Zhou, Guiming Pan, Wang Zhaokun, Daodang Wang, Gao Feng |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Optical fiber business.product_category Extinction ratio business.industry Laser Atomic and Molecular Physics and Optics law.invention Optics law Femtosecond Microfiber Astronomical interferometer Electrical and Electronic Engineering business Engineering (miscellaneous) Refractive index Fabry–Pérot interferometer |
| Zdroj: | Applied Optics. 60:8226 |
| ISSN: | 2155-3165 1559-128X |
| Popis: | 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 ∼ 8 µ 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|