A Multiple Junction Photonic Demodulator with Low Power Consumption for Time-of-Flight Application

This paper presents a multiple junction photonic demodulator (MJPD) for Time-of-Flight (ToF) application which achieves low power consumption and is friendly to large optical window application. The impact of the n- and p- regions has been studied by theoretical calculation and TCAD simulation. MJPD with wide optical window does not only achieve high sensitivity but also achieve faster charge transfer at a lower guide voltage with the increase of n- and p- regions number in the photo-sensing region. This indicates MJPD has the potential to be applied in ToF image sensor pixel.