基于锥形聚合物波导的高灵敏光纤温度传感探头

Highly Sensitive Optical Fiber Temperature-Sensing Probe Based on Conical Polymer Waveguide

基于简单的蘸取技术和紫外光固化技术集成锥形聚合物波导结构与光纤制备了一种高灵敏光纤温度传感探头。实验结果表明,该结构在低温时的温度灵敏度为123.6 pm/℃,且其灵敏度随温度的升高呈非线性增加趋势。其中,聚合物波导的结构紧凑,轴向尺寸为300μm,径向最小尺寸为2μm。基于该波导制备的探头具有较好的温度响应特性、生物兼容性且能实现点探测,在生物医疗等领域有着重要的应用前景。

In this paper,a highly sensitive optical fiber temperature-sensing probe is prepared by integrating the conical polymer waveguide with an optical fiber using simple dipping and ultraviolet curing techniques.The experimental results show that the temperature sensitivity of the structure at low temperatures is 123.6 pm/℃,and the sensitivity observes a nonlinear increasing trend with an increase in temperature.Among them,the polymer waveguide has a compact structure,with an axial dimension of 300μm and a minimum radial dimension of 2μm.This prepared probe based on the waveguide has good temperature response characteristics and biocompatibility.It can also realize point detection and has significant application prospects in the field of biomedicine.