PAM4-based SFP56 64G SR optical module design

As the demand for data centers and high performance computing continues to grow, the need for high-speed and high-efficiency data transmission technology is also on the rise, and PAM4 technology has become one of the key technologies to realize high-speed data transmission due to its advantages in increasing channel capacity. In this paper, an SFP56 packaged optical module based on PAM4 modulation is designed, and the optical module realizes short-distance transmission at 64 Gbps through a DSP chip. The purpose of this module design is to improve the bandwidth density and energy efficiency of the interconnections within a data center. The design of this paper utilizes the advanced PAM4 signal processing algorithm to improve the transmission rate of the module. In addition, this paper utilizes the FEC technique to reduce the BER and further improve the transmission quality and reliability. At the same time, COB technology is used for packaging to reduce the cost of individual modules, and VCSEL lasers are used to achieve optical signal transmission in multimode fiber to further reduce the cost of individual modules.