D-type photonic crystal fiber refractive index sensor with ultra-high fabrication stability and ultra-wide detection range

被引：0
作者：
Shaofeng Wang
Tao Shen
Yue Feng
Chi Liu
Xin Liu
Yuhang Wu
机构：
[1] Harbin University of Science and Technology,Heilongjiang Province Key Laboratory of Laser Spectroscopy Technology and Application
[2] Harbin University of Science and Technology,Key Laboratory of Engineering Dielectrics and its Application, Ministry of Education
[3] Harbin University of Science and Technology,Heilongjiang Provincial Key Laboratory of Quantum Control
来源：
Optical and Quantum Electronics | / 56卷
关键词：
Ultra-wide detection range; D-type photonic crystal fiber; Surface plasmon resonance; High stability;
D O I：
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中图分类号：
学科分类号：
摘要：
To solve the problem of the narrow detection range of D-type photonic crystal fiber (PCF) sensor, a novel refractive index (RI) sensor with an ultra-wide detection range is proposed and analyzed by finite element method. The polishing design provides a flat coating platform for the metal film, ensuring the uniformity of the coating, thereby improving the performance of the sensor. The sensor mainly works in the visible and infrared bands with a detection range of 1.04–1.42, the detection range width can reach 0.38 RIU. To the best of our knowledge, the detection range of this sensor exceeds that of all D-type PCF sensors currently known. The parameters of the sensor are analyzed by numerical calculation and the result shows that the maximum wavelength sensitivity of the sensor is 12,100 nm/RIU, the maximum amplitude sensitivity is −846.4824 RIU−1, resolution can reach 8.2645 × 10−6 RIU, and the maximum figure of merit is 295.1807. In addition, the sensor also has extremely high fabrication stability, which greatly improves the practical application value of the PCF sensor, which is suitable for biomedical research, water quality monitoring, cancer detection and other fields.
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