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  The rapid application of Internet and intelligent terminals has led to the explosive growth of global data volume, which has greatly promoted the development of high-performance Supercomputing Center (HPC) and data center market with high-speed routers, supercomputing and storage as the core. With the development of 40g / 100g port servers, switches and other equipment in the data center, there is more and more demand for high-speed optical interconnection products. At present, domestic device manufacturers continue to develop and innovate optical interconnection technology, and deeply understand and study high-speed integrated parallel optical module and high-frequency signal integrity technology. The key requirements of optical interconnection products are high speed, high density, low cost and low power consumption. The demand of data center / cloud computing system in higher bandwidth and lower power consumption is more and more urgent. AOC active optical cable is one of the best solutions to meet this demand. Compared with interconnected copper cable, AOC active optical cable has many significant advantages, such as lower transmission power on the system link, only a quarter of the weight of direct copper cable, half of the volume of copper cable, and in the computer room The cabling system has better air flow and heat dissipation, the bending radius of optical cable is smaller than that of copper cable, the transmission distance is longer (up to 100-300 meters), and the bit error rate of product transmission performance is also better, the BER can reach 10 ^ - 15. Compared with the optical transceiver module, the AOC active optical cable can reach 10 ^ - 15 due to its non exposed optical interface. Compared with the optical transceiver module, the AOC active optical cable has no exposed optical interface, no problem of optical interface cleaning and pollution, greatly improves the stability and reliability of the system, and reduces the maintenance cost of the computer room. High speed optical interconnection products 40Gbps qsfp + AOC and 120gbps CXP AOC no longer adopt the structure design of Tosa / Rosa in traditional pluggable transceivers, but use highly integrated array optical engine core device technology. In the field of data center and cloud computing system, array optical engine technology has been widely used in the interconnection between active optical cable products servers and switches.