Sensing performance optimization by refining the temperature and humidity of clad engraved optical fiber sensor in glucose solution concentration. (15th February 2023)

• Record Type: Journal Article
• Authors: Renganathan, B.; Rao, Subha Krishna; Kamath, Manjunath S.; Deepak, A.; Ganesan, A.R.
• Is Part Of: Measurement. Volume 207(2023)
• Publication Date: 2023-02-15
• Subjects: Fiber optic glucose sensor -- Temperature -- He-Ne laser -- Low wavelength UV source -- U-shaped bent fiber; Weights and measures -- Periodicals; Measurement -- Periodicals; Measurement; Weights and measures; Periodicals; 530.8
• DOI: 10.1016/j.measurement.2022.112341
• Languages: English
• ISSNs: 0263-2241

Abstract

Highlights: To ensure the accuracy and reliability of the detection results, the ambient temperature and humidity must be calibrated during the glucose concentration measurement. Clad removed multimode plastic fiber optic analyte for studying the power response of glucose solution at low wavelength. Different temperatures (20 °C, 30 °C, 40 °C). Normal temperature (25 °C) was found to have a better reaction than the other values. The maximum intensity recorded at various concentrations as a function of the refractive index of the medium. The principle of evanescent wave absorption. Abstract: The experiments and performance of an evanescence wave-based plastic multimode fiber optic sensor to delineate their spectral and output power response in a glucose solution at room temperature and also at varying temperatures and humidity are described in this paper. In this study, the spectral transmission and the amount of transmitted intensity of the fiber when its morphology was varied both linearly and U-bent were examined. Furthermore, the effect of temperature was investigated by monitoring response both spectrally and electrically for linearly aligned clad removed fiber as a function of time at varying temperatures (20 °C, 25 °C, 30 °C, 40 °C). The sensors' response towards various glucose concentrations (10–100 mM) was also determined under different relative humidity conditions (30 %, 40 %, 50 % 60 %), maintaining the temperature constant. Changes in the refractive index, surface morphology, temperature, and humidity of the sensing region had an impact on the light-transmission modes and sensitivity of the sensor. In summary, our study on the influence of temperature and humidity on glucose sensitivity can broaden the scope of optical sensing, thereby advancing the development of plastic fiber-optic-based evanescent wave sensors.