Wearable Photonic Bioelectric Monitoring Device

Wearable devices are used to record several physiological signals, providing unobtrusive and continuous monitoring. The main challenge in these systems is to develop new recording sensors ideally envisioning non-contact solutions. In this work we propose a wearable fiber-optic based sensor which basis of operation relies on the electro-active effect. Two main biopotential sensing components were investigated: a lithium niobate electro-optic modulator and an electro-active hydrogel (Polyacrylamide). Both approaches have shown satisfactory results in terms of sensitivity and frequency response, placing them as eligible sensing components for wearable biopotential recording applications.