Evanescent Wave Absorption Based Fiber Sensor for Measuring Glucose Solution Concentration

International Conference on Advanced Materials for Better Future 2017

Marzuki, Ahmad^1 ; Pratiwi, Arni Candra^1 ; Suryanti, Venty^2

Department of Physics, Sebelas Maret University, Surakarta

57126, Indonesia^1

Department of Chemistry, Sebelas Maret University, Surakarta

57126, Indonesia^2

关键词: Absorbances;    Evanescent wave;    Evanescent wave absorption;    Fiber Sensor;    Glucose concentration;    Glucose solution;    Sensing elements;    Side-polishing;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/333/1/012016/pdf
DOI  :  10.1088/1757-899X/333/1/012016

来源: IOP

【 摘 要 】

An optical fiber sensor based on evanescent wave absorption designed for measuring glucose solution consentration was proposed. The sensor was made to detect absorbance of various wavelength in the glucose solution. The sensing element was fabricated by side polishing of multimode polymer optical fiber to form a D-shape. The sensing element was immersed in different concentration of glucoce solution. As light propagated through the optical fiber, the evanescent wave interacted with the glucose solution. Light was absorbed by the glucose solution. The larger concentration the glucose solution has, the more the evanescent wave was absorbed in particular wavelenght. Here in this paper, light absorbtion as function of glucose concentration was measured as function of wavelength (the color of LED). We have shown that the proposed sensor can demonstrated an increase of light absorption as function of glucose concentration.