Procedia Engineering
2014
Fiber-optic Lossy Mode Resonance Sensors
FRANCISCO J. ARREGUI; IGNACIO DEL VILLAR; JESÚS M. CORRALES; JAVIER GOICOECHEA; CARLOS R. ZAMARREÑO; CÉSAR ELOSÚA; MIGUEL HERNÁEZ; PEDRO J. RIVERO; ABIAN B. SOCORRO; AITOR URRUTIA; PEDRO SÁNCHEZ; PABLO ZUBIATE; DIEGO LÓPEZ; NEREA DE ACHA; IGNACIO R. MATÍAS

Abstract

In the last 4 years, experimental evidences about the potential use of optical sensors based on Lossy Mode Resonances (LMR) have been presented in the literature. These LMR sensors have some similarities with Surface Plasmon Resonance (SPR) sensors, the gold standard in label-free, real-time biomolecular interaction analysis. In these new LMR sensors, if the non-metallic nano- cladding of an optical waveguide fulfills the conditions explained in this work, coupling of light to the cladding modes happens at certain resonance wavelengths, which enables the use of LMR devices as refractometers and opens the door to diverse applications such as in biology and proteomics research. These highly sensitive refractometers have already shown sensitivities higher than 20,000 nm/RIU or 5×10-7 RIU and, given the youth of this field, it is expected to achieve even better values.

Keywords: Lossy mode resonance; Optical fiber; Sensors; Layer-by-Layer