1. Highly Coupled Seven-Core Fiber for Ratiometric Anti-Phase Sensing.
- Author
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Cuando-Espitia, Natanael, Camarillo-Avilés, Andrés, May-Arrioja, Daniel A., Hernández-Romano, Iván, and Torres-Cisneros, Miguel
- Subjects
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TEMPERATURE sensors , *OPTICAL fiber detectors , *LIGHT sources , *SPECTRAL sensitivity , *PHOTODETECTORS , *SINGLE-mode optical fibers - Abstract
A ratiometric fiber optic temperature sensor based on a highly coupled seven-core fiber (SCF) is proposed and experimentally demonstrated. A theoretical analysis of the SCF's sinusoidal spectral response in transmission configuration is presented. The proposed sensor comprises two SCF devices exhibiting anti-phase transmission spectra. Simple fabrication of the devices is shown by just splicing a segment of a 2 cm long SCF between two single-mode fibers (SMFs). The sensor proved to be robust against light source fluctuations, as a standard deviation of 0.2% was registered in the ratiometric measurements when the light source varied by 12%. Its low-cost detection system (two photodetectors) and the range of temperature detection (25 °C to 400 °C) make it a very attractive and promising device for real industrial applications. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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