The human information industry is transitioning from the mobile Internet era to the intelligent Internet era, and information transmission has gradually evolved from point-to-point to the interaction between humans and machines, machines and machines. At the same time, people put forward higher requirements for computing power and data transmission. In the current era of intelligent Internet, 50G PON (fifth generation passive optical network) is about to become the leading technology in the industry. As the core cooling element in the optical communication plate, TEC (thermoelectric cooler) provides strong support for 50G PON and becomes one of the key technical components.

What is 50G PON

PON (Passive Optical Network) is an access network technology. Its core role is similar to the "wired" base station, through a large number of optical fibers and splitters, so that a large number of home and business users connected to the operator backbone transmission network and the Internet. 50G represents down 50Gbps speed, different rates of PON products have different application scenarios: 10G, 12.5G for home wide (home broadband) users, 25G for home wide and government and enterprise users, 50G for government and enterprise users.

▲ PON network architecture

2. Representative scenes of 50G PON

oneOnline teaching:

Since the epidemic, schools all over the world have widely adopted online courses for online teaching, which inevitably encounters problems such as delays, poor video and sound effects in the classroom, affecting the development of online courses. Although the epidemic has passed, online teaching is still an indispensable scene in the education industry.

2.Support 5G small base station service:

In the development process of 5G, small base stations have become the key networking mode of coverage. Information transmission based on 50G PON plays a key role in improving bandwidth and reducing delay. This not only gives better play to the advantages of 5G high-speed information transmission, but also improves the transmission quality of high-speed information, and effectively reduces the cost of wireless deployment.

3.Industrial Internet:

With the advent of the era of intelligent manufacturing, the demand for intelligent management in the production line of smart factories is getting higher and higher. The 50G PON enables the management of a large number of devices and sensors in a small space. At the same time, some of the devices support high-definition photography and low-delay image acquisition and analysis, which has very high requirements for timely bandwidth extension.

Third, national policies continue to promote the development of 50G PON

At communication forums and conferences of different sizes this year, China Mobile Research Institute and China ICT Academy jointly issued a white paper on the development of 50G PON technology, further promoting the progress of 50G PON worldwide. As the world's largest telecom operator by subscribers, China Mobile has 1.36 billion subscribers and gigabit optical broadband subscriber coverage has exceeded 200 million. Most of the contracted bandwidth users are 200M-1G traffic users, and they have a high demand for traffic.

▲ National policies guarantee gigabit development

4. Development status of 50G PON and market prospect of TEC

Nowadays, the rich intelligent Internet scenarios put forward higher requirements for network, bandwidth and delay. The emergence of 50G PON just meets this market demand. It supports multi-scenario applications and meets the differentiated access requirements of various carrier customers with large bandwidth and low latency. According to the forecast of the relevant head company, 50G PON products will usher in a high-speed growth mode in 2027 and 28. As the core cooling component in 50G PON optical communication products, TEC's market prospects are also highly optimistic by the industry. At present, the export quantity of 10G PON TEC has reached 6.17 million. In contrast, the application scenario of 50G PON is more extensive and the scale is larger, and it is expected that the single specification 50G PON TEC will win the export number of tens of millions of levels.

However, in terms of the current market situation, 50G PON products still have certain conditions:

The 50G PON technology cannot be replaced on a large scale at once. At present, the existing fiber broadband network mainly includes EPON/GPON (1Gbps) and XG(S)-PON (10Gbps) two categories. For most ordinary users, the existing 1Gbps and 10Gbps bandwidth has basically met the daily Internet needs, whether it is high-definition video streaming, online games or remote work, can be smoothly carried out. From an economic and practical point of view, it is neither realistic nor economical to completely phase out the existing EPON/GPON and XG(S)-PON networks and move to a full deployment of 50G PON. In addition, 50G PON technology is similar to base stations, which require the purchase of a large amount of equipment. The maturity of the industrial chain directly affects the cost of technology and equipment. Therefore, operators will gradually upgrade their networks according to actual needs and regional differences, rather than replace them all at once. Only in the case of significant growth in user demand, significant decline in technology costs and a more mature industrial chain, will there be a full transition to the faster 50G PON technology. The process will be progressive, taking into account the efficient use of existing investments and the balance between user needs and technological development.

The above means that in the short term, 50G PON technology is difficult to achieve large-scale application and deployment. However, with the development of technology and the gradual maturity of the industrial chain, the promotion and popularization of 50G PON will be an inevitable trend, and the realization of nationalization and globalization will also be in the future.