Fiber Optic Sensing With Lossy Mode Resonances: Applications and Perspectives

This review focuses on the recent advances in lossy more resonance (LMR) fiber optics sensors. LMR sensors present many interesting feature also in comparison with surface plasmon resonance (SPR), the most widespread resonance-based sensing platform. Two key parameters determine LMR sensors performance: their geometrical configuration and the material supporting the lossy mode resonance. After reviewing those aspects and some fundamentals of the theory the review focuses on the sensing mechanisms, mainly based on refractometry, and their possible applications. Many examples from the literature are reported ranging from electric field to pressure sensors and from gas detection to biosensors. Such vibrant activity on LMR sensors confirms the potentiality of this technology making it a very promising platform for sensor development.