带有温度补偿的微流传感器研究  

Research on Microfluidic Sensor with Temperature Compensation

作　　者：李勇志 金东洋 黄文雪 胡久龄 景殿涛 LI Yongzhi;JIN Dongyang;HUANG Wenxue;HU Jiuling;JING Diantao(Shenyang Liaohai Equipment Co.,Ltd,Shenyang 110000,China)

机构地区：[1]沈阳辽海装备有限责任公司,辽宁沈阳110000

出　　处：《压电与声光》2022年第6期873-876,共4页Piezoelectrics & Acoustooptics

摘　　要：提出一种基于双长周期光纤光栅(LPFG)的边孔光纤微流传感器。该边孔光纤(SHF)内有2个空气孔,是天然的微流体通道,该微流传感器可进行温度补偿。利用CO_(2)激光器在边孔光纤上写入双LPFG,其共振波长分别为1 268.7 nm和1 385.8 nm。实验结果表明,当传感器置于折射率1.335~1.395的甘油水溶液中,2个LPFG共振峰的折射率灵敏度分别为-88.724 nm/RIU和-79.474 nm/RIU,温度灵敏度分别为52.0 pm/℃和55.7 pm/℃,利用折射率和温度灵敏度可推导出传感器的传感矩阵。该文所提出的带有温度补偿的微流传感器具有良好的线性响应度,可实现折射率和温度的同时测量,在环境监测和食品安全领域有潜在价值。A side-hole fiber microfluidic sensor based on dual long-period fiber grating(LPFG) is proposed in this paper. The side-hole fiber(SHF) has two air holes, which are natural microfluidic channels, and the microfluidic sensor can be temperature compensated. The dual LPFGs are written on the side-hole fiber by a CO_(2)laser, and their resonant wavelengths are 1 268.7 nm and 1 385.8 nm, respectively. The experimental results show that, when the sensor is placed in a glycerol aqueous solution with a refractive index of 1.335~1.395, the refractive index sensitivities of the two LPFG resonance peaks are-88.724 nm/RIU and-79.474 nm/RIU, respectively, and the temperature sensitivities are 52.0 pm/℃ and 55.7 pm/℃, respectively. The sensing matrix of the sensor can be derived by using the refractive index and temperature sensitivity. The proposed microfluidic sensor with temperature compensation has good linear responsivity and can realize the simultaneous measurement of refractive index and temperature, which has potential value in the fields of environmental monitoring and food safety.

关 键 词：长周期光纤光栅(LPFG) 边孔光纤 微流传感器 温度补偿 传感矩阵 

分 类 号：TN25[电子电信—物理电子学] TN384