title: A reflective photonic crystal fiber temperature sensor probe based on infiltration with liquid mixtures.
abstract: In this paper, a reflective photonic crystal fiber (PCF) sensor probe for temperature measurement has been demonstrated both theoretically and experimentally. The performance of the device depends on the intensity modulation of the optical signal by liquid mixtures infiltrated into the air holes of commercial LMA-8 PCFs. The effective mode field area and the confinement loss of the probe are both proved highly temperature-dependent based on the finite element method (FEM). The experimental results show that the reflected power exhibits a linear response with a temperature sensitivity of about 1 dB/°C. The sensor probe presents a tunable temperature sensitive range due to the concentration of the mixture components. Further research illustrates that with appropriate mixtures of liquids, the probe could be developed as a cryogenic temperature sensor. The temperature sensitivity is about 0.75 dB/°C. Such a configuration is promising for a portable, low-power and all-in-fiber device for temperature or refractive index monitoring in chemical or biosensing applications.
authors.affiliation: College of Precision Instrument and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, China. wangran1986@tju.edu.cn
authors.forename: Ran
authors.initials: R
authors.lastname: Wang
authors.forename: Jianquan
authors.initials: J
authors.lastname: Yao
authors.forename: Yinping
authors.initials: Y
authors.lastname: Miao
authors.forename: Ying
authors.initials: Y
authors.lastname: Lu
authors.forename: Degang
authors.initials: D
authors.lastname: Xu
authors.forename: Nannan
authors.initials: N
authors.lastname: Luan
authors.forename: Mayilamu
authors.initials: M
authors.lastname: Musideke
authors.forename: Liangcheng
authors.initials: L
authors.lastname: Duan
authors.forename: Congjing
authors.initials: C
authors.lastname: Hao