Method for realizing high-speed serial communication between FPGAs (Field Programmable Gate Array) based on optical isolation

The invention discloses a method for realizing high-speed serial communication between FPGAs (Field Programmable Gate Array) based on optical isolation, which is characterized in that a transmitting end and a receiving end of data communication are two independent FPGA board cards, and each FPGA board card is provided with a 8b10b coder/decoder and a parallel/serial or serial/parallel conversion module; optical one-way communication without a feedback loop is realized through the optical module; the output of the optical module is connected to the four input IOs of the receiving board card, and the data lines are equal in length; the receiving board card is based on external 4 input, an IDDR is used in an FPGA, different clock phases are used for achieving oversampling with the 8-time sampling rate, serial data selected and output by sampling points are converted into parallel data, and follow-up processing is carried out. The FPGA is adopted for receiving and sending, the price is low, and the power consumpt