PROJECT TITLE :

Dual Output Approach in Dye Concentrations Determination Using Non-Adiabatic Tapered Fiber

ABSTRACT:

A non-adiabatic tapered optical fiber sensor based mostly on interferometric approach was developed by tapering one-mode fiber using flame brushing technique. Two output variables in the form of absorption and spectral shift were used to infer the dye concentration of an analyte containing Remazol Black B. The system might measure the dye concentration of the analyte inside a vary of fifty to 250 ppm with sufficient sensitivity and configurability. A sensitivity of $seven.61times 10^-5$ abs/ppm and 0.0045 nm/ppm was obtained for the output derived from the absorption of sunshine and spectral shift, respectively. A brand new predictive model was formulated by combining the expected dye concentrations of absorption and spectral shift with equal weightings. Then, an experiment was performed to live the accuracy of the models that use absorption, spectral shift, and their combination to predict the concentration of an analyte in the vary of fifty to 250 ppm. The variations between the actual and the anticipated dye concentration values were evaluated in terms of the correlation coefficient ( $R^2$ ), root-mean-sq. error (RMSE), and mean absolute share error (MAPE), respectively. The results show that by combining the 2 parameters, a better estimate ( $R^2=0.9875$ , $textrm RMSE=seven.6761$ , $textrm MAPE=four.1257$ ) of the dye concentration with higher correlation and lower error will be achieved. Finally, an additional experiment is conducted to validate the accuracy of the sensors.


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