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Graphene-Based Waist-Enlarged Optical Fibre Sensor for Measurement of Sucrose Concentration
Peng, Zhiqing1; Feng, Wenlin1,2; Yang, Xiaozhan1,2; Fang, Liang3; Wei, Dapeng4; Liu, Xiangzhi1,4
2019-09-01
摘要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 (R-2 = 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.
关键词Blue Shift Graphene Mach-Zehnder Interferometer Sucrose Sensor Waist-Enlarged Bitapers
DOI10.1515/zna-2018-0564
发表期刊ZEITSCHRIFT FUR NATURFORSCHUNG SECTION A-A JOURNAL OF PHYSICAL SCIENCES
ISSN0932-0784
卷号74期号:9页码:751-756
通讯作者Feng, Wenlin(wenlinfeng@126.com)
收录类别SCI
WOS记录号WOS:000483256400003
语种英语