Semiconductors have a wide range of applications in the field of information and communication equipment. In terms of communication, semiconductors can convert electrical signals into optical signals, enabling high-speed and long-distance communication, such as mobile phones, satellite communication, and fiber optic communication. With the advancement of technology, communication has become more convenient, fast, and stable. The new generation of fiber optic communication technology, such as 40Gbps devices, heavily utilizes compound semiconductor integrated circuits. In addition, semiconductor discrete devices also have important applications in the network communication market, such as router products. With the popularity of mobile Internet and wireless routing, this market has broad prospects.