Wavelength and intensity based lossy mode resonance breathing sensor

Copper oxide (CuO) allows the generation of lossy mode resonance (LMR) in a wide wavelength range optical spectrum, both visible and near-infrared (NIR). For this, it is necessary to use configuration based on lateral incidence light edge planar waveguide structure. On other hand, additional coatings tin (SnO2) agarose an increase sensitivity sensor, response breathing monitoring. The sensors were characterized, intensity wavelength. In cases their behavior depends position LMR spectrum. Therefore, convenient extract design rules that allow optimal sensor. this sense, located NIR presented better terms quality signal. addition, devices tested different conditions: repetitive tests at distances, oral nasal breathing, after doing physical exercise.