Optical fibre-based refractive index measurement sensor. (3rd February 2023)

• Record Type: Journal Article
• Authors: Terdale, Jayprabha Vishal; Ghosh, Amrit
• Is Part Of: International journal of engineering systems modelling and simulation. Volume 14:Number 2(2023)
• Page Start: 101
• Page End: 108
• Publication Date: 2023-02-03
• Subjects: intensity modulation -- macro-bending -- transparent liquid -- sucrose -- glycerine -- ethanol -- U-shape polished optical fibre -- refractive index sensor; Engineering systems -- Computer simulation -- Periodicals; Engineering systems -- Mathematical models -- Periodicals; 620.0042
• Languages: English
• ISSNs: 1755-9758

Abstract

Optical devices are increasingly widely used in surveillance, particularly in the food, beverage, and healthcare sectors. A precise refractive index profile is required to support maximum light intensity on the fibre material. But unpolished optical fibre has a difficult RI profile. By changing the solution's concentration, it allows precise RI measurement. We present an intensity modulated fibre optic refractive index measurement using macro-bending and side polishing. RI conditions and the dipping solution concentration in the detecting region are more sensitive to probes with a polished surface (sucrose, glycerin, and ethanol). With RI 1.34-1.42, the POF performance sensing capability increases. This allows for physical variations in intensity at visible wavelengths at cheap cost and compact size.