When it comes to 5G, everyone is no stranger to it. It is a popular concept, but it has not yet been commercialized on a large scale. Many 5G base stations are still in the process of construction. Throughout the development history of the communication industry, the communication system has developed from the first generation to the fifth generation today, and the network capacity and bandwidth have been continuously improved with the development of the times.

The emergence of 5G is due to the continuous growth of mobile data demand. More and more devices are connected to the mobile network. New services and applications emerge in endlessly, resulting in the surge of mobile data, which brings great challenges to the network capacity. In order to improve the network capacity, 5G is born. Compared with 4G, 5G has faster transmission rate, lower delay and more stable transmission. But at the same time, it also faces many problems, such as the location of the base station, the huge cost of construction and operation, the large number of devices involved, and the need to rely on the global supply chain.

The prelude of 5G network deployment has been opened. 5G technology is closely related to the future Internet of things industry, which contains huge economic benefits. All countries strive to gain a leading edge in the future 5G technology business. Now, China's 5G technology has made a breakthrough, 5G key technology is also gradually clear. In the construction of 5G network, optical module as an essential optical communication device, its role is to realize the conversion between optical signal and electrical signal. At present, 25G optical module is widely used in 5G forward base station.

25G optical modules, using SFP28 package type, LC connector, according to different standards, divided into 25GBase-SR, 25GBase-LR, 25GBASE-ER, etc. Next ETU-LINK will introduce several commonly used 25G optical modules.

1. 25GBase-SR optical module, mainly used for short-distance transmission, up to 100M transmission, the center wavelength is 850nm, dual LC connector.

2. 25GBase-LR optical module, mainly used for short- and medium-distance transmission, supports 10KM transmission distance, the center wavelength is 1310nm, dual LC connector.

3. 25GBASE-ER optical module, mainly used for medium and long distance transmission, supports 40KM transmission distance, center wavelength is 1310nm, dual LC connector.

4. 25G BIDI SFP28 single-fiber bidirectional optical module, mainly used for short- and medium-distance transmission, supports 10KM transmission distance, the center wavelength is 1330/1270nm, full-duplex transceiver, maximum power consumption is less than 1.2W.

5. 25G CWDM SFP28 single-fiber optical module, mainly used for short- and medium-distance transmission, supports 10KM transmission distance, and the center wavelength is 1270-1370nm.

The above five 25G optical modules are mainly used in 5G base station forward transmission, data center and other fields. In the next few years, optical module technology industry will present the characteristics of high speed, large bandwidth, small size, low power consumption and so on. ETU-Link focuses on the R & D, production and sales of optical modules and other communication products. It can provide a full range of 25G optical modules for 5G network construction.

Based on the "high speed and low delay" characteristics of 5G network, artificial intelligence, big data and cloud computing can develop at a faster speed. For example, in the unmanned car driving scene, the use of high-speed, low delay 5G network combined with big data cloud computing technology can achieve advance prediction, planning and decision-making, help the car perceive the complex traffic environment, and make decisions such as avoiding and optimizing routes.

Finally, in the future, 5G will penetrate into all areas of society and build a user-centric comprehensive information ecosystem. 5G will bring users an immersive information experience, provide an excellent interactive experience, and change people's life and production methods.