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All Journal TELKOMNIKA (Telecommunication Computing Electronics and Control)
Bunga Meyzia
Universitas Riau
Computer Science & IT

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Optimizing signal conversion in uniform FBGs with InGaAs photodetectors for medical sensors Tengku Emrinaldi; Bambang Widiyatmoko; Bunga Meyzia; Sumiaty Ambran; Saktioto Saktioto; Mohamad Syahadi; Agitta Rianaris; Dwi Hanto
TELKOMNIKA (Telecommunication Computing Electronics and Control) Vol 23, No 4: August 2025
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12928/telkomnika.v23i4.26164

Abstract

This study experimentally interrogates the spectral response of uniform fiber Bragg gratings (FBGs) with varying reflectivity levels of 30%, 50%, 70%, and 90% under controlled environmental stimuli. The objective is to elucidate the influence of reflectivity on the wavelength shift behavior of FBGs and to inform the optimal interrogation of these elements with indium gallium arsenide (InGaAs) photodetectors in high-performance sensing systems. Utilizing high-precision measurement procedures and specialized instrumentation, the experiments revealed that the magnitude and pattern of wavelength shifts are significantly influenced by FBG reflectivity. Specifically, lower reflectivity enhances sensitivity, while higher reflectivity contributes to greater spectral stability. These findings highlight the critical role of reflectivity in shaping the spectral modulation characteristics of FBGs, establishing a critical theoretical framework for precision optical sensor systems. The outcomes give significant contributions to the design and calibration of FBG-based sensors, particularly biomedical applications where precision and responsiveness are paramount.
Co-Authors Agitta Rianaris Bambang Widiyatmoko Dwi Hanto Mohamad Syahadi Saktioto Saktioto Sumiaty Ambran Tengku Emrinaldi