Detection of Cadmium Ion by Evanescent Wave Based Chitosan Coated Optical Fiber Sensor

3rd International Conference on Mathematics, Science and Education 2016

数学;自然科学;教育

Yulianti, I.^1 ; Edy, S.S.^1 ; Saputra, B.A.^1 ; Aji, M.P.^1 ; Susanto^1 ; Kurdi, O.^2

Physics Department, Faculty of Natural Sciences and Mathematics, Universitas Negeri Semarang, Semarang, Indonesia^1

Mechanical Engineering, Universitas Dipenogoro, Semarang, Indonesia^2

关键词: Cadmium ions;    Coated optical fibers;    Dipcoating methods;    Evanescent wave;    Linear response;    Steady state;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/824/1/012002/pdf
DOI  :  10.1088/1742-6596/824/1/012002

来源: IOP

【 摘 要 】

Evanescent wave based-optical fiber sensor to detect cadmium ion is proposed. Chitosan was used by using the dip-coating method. The sensor was fabricated in U-bent shape. U-bent optical sensor at aconcentration of 2ppm and 5ppm had asensitivity of 0.2067 dBm/ppm and -0.7995 dBm/ppm, respectively. At a level of 2ppm - 5ppm, the optical sensor has a linear response with asensitivity of -0.283 dBm/ppm. The sensor takes 9.5 minutes to reach steady stateat aconcentration of 1 ppm. Atalevel of 2ppm - 5ppm, the sensor takes 5 minutes to 10.45 minutes to reach steady state.