US Patent 10313021 High-efficiency self-resetting integrating optical transceiver

An optical transceiver includes an optical transmitter configured with data pre-coding to support integrating and resetting functions in a corresponding self-resetting integrating optical receiver; and a self-resetting integrating optical receiver comprising dual photodetectors connected to a capacitor, wherein the dual photodetectors and the capacitor are configured to perform the integrating and resetting functions based on a pre-coded optical input from a corresponding optical transmitter. The data pre-coding can include a 0 differential phase indicative of a 1 bit to set a charge on the capacitor for setting function, +/−π/2 differential phase indicative of a hold so that the charge on the capacitor is held at a previous value by delivering equal intensity to the dual photodetectors for a holding function, and a π differential phase indicative of a 0 bit to reset the charge on the capacitor to zero for resetting function.