The status quo and prospects of China's all-optical network development

The future high-speed communications network will be all-optical network. All-optical network is the highest stage and the ideal stage for the development of optical fiber communication technology. The traditional optical network achieves full photonization between nodes, but electrical components are still used at the nodes of the network, which limits the further increase of the total capacity of the current communication network trunk. Therefore, a true all-optical network has become a very important issue.

All-optical networks use optical nodes instead of electrical nodes. Nodes are also all-photonized. Information is always transmitted and exchanged in the form of light. Switch-to-user information processing is no longer performed on a bit-by-bit basis, but routing is determined based on its wavelength.

At present, the development of all-optical networks is still in its early stages, but it has shown good development prospects. Judging from the development trend, the formation of a true optical network layer based on WDM technology and optical switching technology, the establishment of a pure all-optical network, elimination of electro-optical bottlenecks has become an inevitable trend in the future development of optical communications, it is the future of information networks The core is also the highest level of communication technology development, and it is an ideal level.