Photonic Crystal Fiber Based on Surface Plasmon Resonance Used for Two Parameter Sensing for Magnetic Field and Temperature
Tiantian Dai,
Yingting Yi,
Zao Yi,
Yongjian Tang,
Yougen Yi,
Shubo Cheng,
Zhiqiang Hao,
Chaojun Tang,
Pinghui Wu,
Qingdong Zeng
Affiliations
Tiantian Dai
Joint Laboratory for Extreme Conditions Matter Properties, Key Laboratory of Manufacturing Process Testing Technology of Ministry of Education, State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China
Yingting Yi
College of Physics and Electronics, Central South University, Changsha 410083, China
Zao Yi
Joint Laboratory for Extreme Conditions Matter Properties, Key Laboratory of Manufacturing Process Testing Technology of Ministry of Education, State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China
Yongjian Tang
Joint Laboratory for Extreme Conditions Matter Properties, Key Laboratory of Manufacturing Process Testing Technology of Ministry of Education, State Key Laboratory of Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010, China
Yougen Yi
College of Physics and Electronics, Central South University, Changsha 410083, China
Shubo Cheng
School of Physics and Optoelectronic Engineering, Yangtze University, Jingzhou 434023, China
Zhiqiang Hao
Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering, Wuhan University of Science and Technology, Wuhan 430081, China
Chaojun Tang
College of Physics, Zhejiang University of Technology, Hangzhou 310023, China
Pinghui Wu
College of Physics & Information Engineering, Quanzhou Normal University, Quanzhou 362000, China
Qingdong Zeng
School of Physics and Electronic-Information Engineering, Hubei Engineering University, Xiaogan 432000, China
This paper presents a photonic crystal fiber (PCF) sensor that can be used to measure the temperature and magnetic field simultaneously, and to monitor the changes in them in the environment. When we designed the fiber structure, two circular channels of the same size were added to the fiber to facilitate the subsequent addition of materials. A gold film is added to the upper channel (ch1), and the channel is filled with a magnetic fluid (MF). The sensor can reflect changes in the temperature and magnetic field strength. The two channels containing MF and PDMS in the proposed fiber are called ch1 and ch2. The structure, mode and properties (temperature and magnetic field) were analyzed and discussed using the finite element method. By using the control variable method, the influence of Ta2O5 or no Ta2O5, the Ta2O5 thickness, the diameter of the special air hole, the distance from the fiber core and the distance between them in the displacement of the loss spectrum and the phase-matching condition of the coupling mode were studied. The resulting maximum temperature sensitivity is 6.3 nm/°C (SPR peak 5), and the maximum magnetic field sensitivity is 40 nm/Oe (SPR peak 4). Because the sensor can respond to temperature and magnetic field changes in the environment, it can play an important role in special environmental monitoring, industrial production and other fields.
