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Optical fiber transmission quality analysis based on FPGA

With the development of high-speed digital system, high-speed serial data transmission is widely used and the FPGA containing high-speed serial transceiver is also widely used. The high-speed serial interface of Xilinx's FPGA includes GTP, GTX, GTH and other high-speed transceivers with different transmission rate. The physical transmission speed of these transceivers can reach tens of Gbps. These low-level high-speed transceivers can support a variety of top-level transmission protocols, such as SRIO, PCIE, SATA, optical fiber and so on. Among these top-level transmission protocols, optical fiber transmission has the longest transmission distance and is widely used in various scenarios. Optical fiber transmission has three advantages. Firstly, its transmission capacity is very large and it can support ultralong distance transmission, one line optical fiber transmission rate can easily reach several Gbps. Secondly, optical fiber communication has strong anti-electromagnetic interference characteristics, which can ensure the quality of data transmission. Thirdly, optical fiber transmission uses light wave for data transmission and the light wave transmitted in the optical fiber cannot run out, so there is no radiation and it is difficult to eavesdrop.