Graphene-Based Waist-Enlarged Optical Fibre Sensor for Measurement of Sucrose Concentration
| Autor: | Xiangzhi Liu, Wenlin Feng, Zhi-Qing Peng, Liang Fang, Xiaozhan Yang, Dapeng Wei |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Waist Graphene business.industry General Physics and Astronomy 02 engineering and technology 021001 nanoscience & nanotechnology Mach–Zehnder interferometer 01 natural sciences law.invention Blueshift 010309 optics Experimental physics law Optical fibre sensor 0103 physical sciences Optoelectronics Physical and Theoretical Chemistry 0210 nano-technology business Mathematical Physics |
| Zdroj: | Zeitschrift für Naturforschung A. 74:751-756 |
| ISSN: | 1865-7109 0932-0784 |
| DOI: | 10.1515/zna-2018-0564 |
| Popis: | A novel sucrose sensor based on graphene-coated optical fibre with waist-enlarged bitapers as Mach-Zehnder interferometer is proposed and demonstrated. The sensor is formed by arc fusion splicing a photonic crystal fibre (PCF) sandwiched between two single-mode fibres (SMFs). The intermodal interference is achieved by two waist-enlarged fibre tapers at the coupling points between the PCF and two SMFs. The result shows that the dips of transmission spectra exhibit blue shift with the concentration increase of the sucrose, and the sensor has a high linear response (R2 = 0.98233) to sucrose with an excellent sensitivity of 3.36 pm/ppm in the range of 0–230 ppm. Additionally, the surface adsorption mechanism is also discussed. Such easily fabricated, cost-effective and small volume fibre interferometer could be used for sucrose sensing applications. |
| Databáze: | OpenAIRE |
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