Digital sensor apparatus and devices, namely, digital image sensors and detectors comprising photonic integrated circuits to detect and measure light, and for optical sensing and/or depth estimation to detect and measure light and create modules and components for mobiles, wearables, glasses and/or headsets for extended reality (XR), augmented reality (AR), virtual reality (VR) and mixed reality (MR) and/or mobile industries; sensor systems, namely, sensor systems comprising of an optical sen...