Engineering Research Center of Optoelectronic Devices and Communication Technology, Ministry of Education, Tianjin Key Laboratory of Film Electronic and Communication Devices, School of Integrated Circuit Science and Engineering, Tianjin University of Technology, Tianjin 300384, China.
Sensors (Basel). 2024 Sep 30;24(19):6344. doi: 10.3390/s24196344.
A blood glucose concentration and temperature sensor with a balloon-shaped single-mode fiber (SMF) based on a core-offset structure is proposed and experimentally demonstrated. The balloon-shaped SMF is created by offset-fusing a straight-line SMF between two other SMFs, thereby forming a Mach-Zehnder interferometer (MZI). The core-offset structure can effectively excite higher-order cladding modes. The experimental results showed that the maximum sensitivity of blood glucose concentration was 0.331 nm/(mmol/l) and the maximum sensitivity of temperature was 0.216 nm/°C when the offset distance was 10 μm. Dual-parameter measurement was achieved through a dual-parameter matrix. In addition, the sensor has characteristics such as simple structure, low cost, good stability, and electromagnetic interference resistance, making it potentially valuable for diagnosing high blood glucose and related conditions.
提出并实验验证了一种基于芯区偏移结构的具有气球型单模光纤（SMF）的血糖浓度和温度传感器。通过在两段普通 SMF 之间熔接一段直线型 SMF 来制作气球型 SMF，从而形成马赫-曾德尔干涉仪（MZI）。芯区偏移结构可以有效地激发高阶包层模式。实验结果表明，当偏移距离为 10μm 时，血糖浓度的最大灵敏度为 0.331nm/（mmol/L），温度的最大灵敏度为 0.216nm/°C。通过双参数矩阵实现了双参数测量。此外，该传感器具有结构简单、成本低、稳定性好、抗电磁干扰等特点，有望用于诊断高血糖症及相关病症。
