Biochemical fiber sensor based on evanescent field for detection persistent organic pollutants (POPs)

International Conference on Science and Applied Science (Engineering and Educational Science) 2016

物理学;工业技术;教育

Prasetyo, Edi^1 ; Gitrin, Martia Putri^1 ; Marzuki, Ahmad^1 ; Suryanti, Venty^1

Optic and Photonic Laboratory Physics, Department Faculty of Mathematics and Natural Science, Sebelas Maret University, Jl. Ir. Sutami No 36A, Surakarta, Indonesia^1

关键词: Bio-chemical compounds;    Evanescent wave;    Fiber Sensor;    Light output;    Persistent organic pollutants;    Sensing devices;    Total internal reflections;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/795/1/012028/pdf
DOI  :  10.1088/1742-6596/795/1/012028

来源: IOP

【 摘 要 】

Fiber optic is a light waveguides media that are cylindrical. Optical fiber has certain properties when it transmits light so it can be developed to be a sensing device or sensor. Evanescent wave phenomena appear when there are total internal reflections from many modes in an optical fiber. In this research, the Biochemical Fiber Sensor (BFS) using polishing cladding and some of the core fiber will be fabricated. BFS is used to interact with a biochemical compound. The principle of BFS is based on evanescent absorption which absorbs the typical spectrum of a biochemical compound. By measuring the spectrum from the light output in the BFS, evanescent absorption spectra can be analyzed an optical fiber. In this study, the biochemical compounds that used are lindane that is one of the Persistent Organic Pollutants (POPs). The result showed that there is a change from BFS spectra when it was exposed by POPs compound with various concentration. That change showed that there is evanescent absorption in BFS. Concentration of POPs compound is proportional with evanescent absorption of the POPs compound.