In the 21st century, information technology has been greatly developed. The Internet, big data and artificial intelligence have greatly enriched people's communication and life. The base of information technology is the communication network. It is because the transmission efficiency of the communication network has improved exponentially in the past two decades and the cost per bit has dropped significantly that the long-distance transmission and centralized processing of massive data have become possible. The concentration of massive data together has triggered the revolution of cloud computing and big data

Among them, China is the world's largest optical communication market, is also the world's largest manufacturing base.

China accounts for 40% of the global shipments of optical transmission equipment, 70% of optical access equipment, 25% of digital communication equipment, 60+% of optical fiber and about 15% of optical components.

At the beginning of this year, the country's first 29 gigabit cities were officially unveiled, showing the latest achievements of China's gigabit optical network construction, and 2022 will usher in the peak of gigabit city construction. As an important basic material for the construction of gigabit cities, optical fiber and cable, optical devices and other products will be greatly improved, boosting the optical communication industry into the third round of growth cycle.

Overview of optical communication industry

Optical communication takes optical fiber as transmission medium, and the signal transmitted is optical signal. But computers, mobile phones, optical communication equipment and other terminals, are through the electrical signal "0 and 1" to process information, so the terminal equipment in the information processing must carry out photoelectric conversion.

The optical communication system consists of "transmitting unit that converts electrical signals into optical signals", "receiving unit that converts optical signals into electrical signals" and "transmission channel fiber".

Optical communication network is mainly divided into core layer, backbone layer, aggregation layer and access layer.

From the point of view of access layer, there are mainly PON network; from the point of view of aggregation, backbone and core layer, the main devices are WDM, OTN and so on.

Optical communication industry chain

Optical communication industry chain from the beginning of the basic components manufacturing, by optical communication basic components manufacturers based components, such as ceramic casing, insert core provided by laser chip maker, monitor, and again modulator chip, optical component manufacturers will integrate all kinds of basic components and chips into the light module, again by communications equipment manufacturers to integrate the various types of optical components, optical module for communication equipment, Finally, telecom operators purchase communication equipment, optical fiber and cable for networking, and provide telecom services to end users.