This study investigates the efficacy of inclined fiber Bragg gratings (IFBGs) as temperature sensors by examining the transmission and reflection spectra in both uncoated and nano-gold coated configurations. The optical fibers utilized in this research were silica-based TFBGs operating at a wavelength of 1550nm, with temperature measurements conducted over a range of 24°C to 95°C. Following the initial measurements, the fiber thickness was reduced through a chemical treatment using a 10% hydrofluoric acid solution. Subsequently, the fibers were coated with a gold layer employing surface plasmon resonance (SPR) technology. The results indicated a significant shift in wavelengths for both the transmission and reflection spectra, alongside an increase in optical power. These findings suggest an enhancement in the sensitivity of the sensors, reflecting their potential for improved performance in temperature sensing applications.

temperature, transmission wavelengths, modified TFBG, surface plasmon resonance, sensing applications

Received: November 19, 2024; Accepted: February 11, 2025; Published: June 9, 2025

How to cite this article: Elaf M. Al-Awadi, Qussay Mohammed Salman and Anwaar A. Al-Dergazly, The effect of temperature on transmission wavelengths of modified TFBG based on surface plasmon resonance, JP Journal of Heat and Mass Transfer 38(3) (2025), 369-381. https://doi.org/10.17654/0973576325018

This Open Access Article is Licensed under Creative Commons Attribution 4.0 International License

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