Spiral Optical Fiber Sensor for Precision Vibration and Structural Strain Detection

This study presents the design and theoretical analysis of a spiral optical fiber system for precise detection of mechanical vibrations and micro-strain in structural materials. The sensing principle is based on phase modulation of coherent light in a coiled fiber geometry, where the curvature enhances optical path length sensitivity to deformation. The proposed configuration offers a compact, low-power, and scalable alternative to conventional piezoelectric and interferometric sensors. Such spiral fiber assemblies can be integrated into aerospace structures, civil engineering components, or laboratory setups. Calculated data indicate that the spiral geometry significantly amplifies phase shifts induced by local strain, allowing reliable registration of minute oscillations in complex mechanical systems.

Mervel, D. (2025). Spiral Optical Fiber Sensor for Precision Vibration and Structural Strain Detection. Zenodo. https://doi.org/10.5281/zenodo.17253032