IP3 2023 – Optical Receiver (LOT 13797)

This lot is generally related to an optical receiver which minimizes a pulse-width distortion, is economical and uses low power. Disclosed is an optical receiver having an optical detector for converting a received optical signal to a current signal and a transimpedance amplifier for converting the current signal to a voltage signal. The system has a level shifter for converting the voltage signal to a threshold voltage by removing an offset of the voltage signal. The level shifter has multiple linear subtractors connected in series and a reference voltage generator for generating a reference voltage in proportion to a variation of the offset of the voltage signal. Further disclosed is a comparator for comparing the threshold voltage and the reference voltage to generate a digital signal. The technology may be implemented in optical receivers, etc.