期刊
OPTICAL FIBER TECHNOLOGY
卷 56, 期 -, 页码 -出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.yofte.2020.102163
关键词
Mach-Zehnder interferometer; Fiber optic sensor; Temperature; Refractive index; Transverse load; Fabry-Perot interferometer
资金
- National Key Research and Development Program of China [2018YFB1801004]
- National Natural Science Foundation of China (NSFC) [61835005, 61822507, 61522501, 61475024, 61675004, 61705107, 61727817, 61775098, 61720106015, 61875248, 61975084]
- Beijing Young Talent [2016000026833ZK15]
- Fund of State Key Laboratory of IPOC (BUPT), Natural Science Foundation of the Jiangsu Higher Education Institutions of China [19KJB140011]
- Startup Foundation for Introducing Talent of NUIST [2241131801051, 2241131801052]
- Open Fund of IPOC (BUPT), Jiangsu talent of innovation and entrepreneurship, Jiangsu team of innovation and entrepreneurship
An in-line Fabry-Perot/Mach-Zehnder hybrid interferometer based on photonic crystal fiber (PCF) for transverse load and refractive index measurement is proposed and experimentally demonstrated. The interferometer is fabricated by fusion splicing a section PCF between hollow core silica tube air bubble and hollow core silica tube (HCST). The hollow core silica tube air bubble is both a beam splitter for the Mach-Zehnder interferometer (MZI) and a Fabry-Perot interferometer (FPI) component, that is, there are both MZI and FPI functions on one sensor. Thanks to the structure of this special hollow core silica tube air bubble, transverse load measurement can be achieved. Meanwhile, this sensor also can measure refractive index and temperature. Experimental results show that the transverse load and refractive index sensitivities are 1.5277 nm/N and 99.2907 nm/RIU, respectively. In addition, the temperature sensitivity (-13.7 pm/degrees C) is relatively low. This sensor has outstanding advantages of high sensitivity, design flexibility, easy fabrication and compact size, which make it attractive in the field of multiparameter sensing applications.
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