Sensitivity optimization of POF sensors based on an intensity low-cost configuration targeting chemical and biochemical sensing
Sequeira, F.
;
Nogueira, R.N.
; Rudnitskaya, Rudnitskaya, A.
; Cennamo, N.
; Zeni, L.
; Bilro, L.
Sensitivity optimization of POF sensors based on an intensity low-cost configuration targeting chemical and biochemical sensing, Proc International Conference on Plastic Optical Fibres - POF , Aveiro, Portugal, Vol. , pp. paper 90-1 - paper 90-4, September, 2017.
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Abstract
We report the development of RI POF sensors for water quality assessment using simple, fast and low-cost methods. The modification of the surface roughness of the POF’s sensing region allowed to increase the sensor’s sensitivity. The optical monitoring was performed through an intensity-based low-cost system comprising a LED, an optical coupler and two photodetectors. These sensors can be used for liquid refractive index sensing with 10-4 RIU resolution and future developments aim chemical and biochemical sensing using selective layers.
