Polarization sensing using polarization diffraction devices

Abstract

The recent increasing interest, associated with stimulated needs to remote technology due to pandemic of COVID-19, in optical sensing stems from their potential ability to gather various information about objects in a contactless manner. For remarkably improving quality of the optical sensing information, we have proposed the introduction of concept of light polarization into the optical sensing. The ‘polarization sensing system’ consists of polarization beam steering, imaging, and distance measuring systems, and the polarization gratings, which are fabricated using the photo-alignment of liquid crystalline polymers, are of grating important for realizing these systems.