A high-sensitivity temperature sensor based on Sagnac interferometer employing photonic crystal fiber fully filled with ethanol

被引：40
|
作者：
Shi, Min [1 ,2 ]
Li, Shuguang [1 ,2 ]
Chen, Hailiang [1 ,2 ]
机构：
[1] Yanshan Univ, Sch Sci, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Peoples R China
[2] Yanshan Univ, Sch Sci, Key Lab Microstruct Mat Phys Hebei Prov, Qinhuangdao 066004, Peoples R China
来源：
APPLIED PHYSICS B-LASERS AND OPTICS | 2018年 / 124卷 / 06期
基金：
中国国家自然科学基金;
关键词：
BIREFRINGENCE;
D O I：
10.1007/s00340-018-6944-7
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A high-sensitivity temperature sensor based on photonic crystal fiber Sagnac interferometer is proposed and studied. All holes of the PCF are filled with ethanol with capillarity. The cladding air holes are uniform arrangements. The two air holes around the core are removed to form new core modes with high birefringence. The sensitivities of the temperature can be up to -8.7657 and 16.8142 nm/C when temperature rises from 45 to 75 C and the fiber length is 5.05 cm. And when temperature rises from 10 to 45 C, the sensitivity can reach -7.848 and 16.655 nm/C with fiber length 2.11 cm. The performance of the selective-filled and the fully-filled PCF with temperature from 45 to 75 C and fiber length 5.05 cm are analyzed and compared. The fully filling can better achieve PCF's sensing performance. The simple structure and high sensitivities make the temperature sensor easy to achieve. The temperature sensor with high sensitivities and good linearity has great application value for environmental temperature detecting.
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收藏
页数：7
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