In this work, we report the analysis and the development of a fiber optic grating sensor based on long-period grating (LPG) coated with a hydrophilic material as a promising technology for measuring soil moisture. The operating principle of LPG is explored, which is based on the modulation of the wavelength of light due to variations in the refractive index of the surrounding medium. We discuss how these variations are directly related to changes in soil moisture, making LPG suitable for this application.
No takes yet. Share an insight, caveat, or question.
Atiglo et al. (2024) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: