At the “CCSA Next Generation Optical Transport Network Industry and Technical Standards Promotion Committee (TC618) inaugural meeting” and the “New Generation Optical Forum (NGOF) 2020 Annual Meeting”, Wu Hequan, academician of the Chinese Academy of Engineering, said: In this new era, firstly we should meet the needs of 5G ultra-broadband applications, but also support low-latency and deterministic communications, and develop towards a highly reliable and intelligent all-optical network with flexible slicing, expecting more innovative technologies to be empowered.

According to Wu Hequan: Based on the theory developed by Dr. Gao Kun’s thesis on optical fiber communications in 1966, Corning developed the world’s first optical fiber in 1970. Although the loss was as high as 20dB per kilometer, it created the era of optical fiber communications;  Half a century has passed since 1970, and optical fiber communication has lived up to expectations, covering five continents and four oceans and entering the families of hundreds of millions of people.

“China’s optical fiber communications came from behind, becoming the country with the highest optical fiber penetration rate in the world, and domestic optical communications enterprises have the largest market share in the global market.” Wu Hequan said: Now that optical fiber communications has entered a new era, it is the first thing to meet the needs of 5G ultra-broadband applications. We also needs to support low-latency and deterministic communications, and will develop towards a highly reliable and intelligent all-optical network with flexible slicing. It is expected that more innovative technologies will be empowered.

For example, in terms of the impact of 5G on optical fiber access technology, in order to reduce bandwidth requirements and dynamically adapt to actual traffic, the front-haul interface needs to be changed from time division multiplexing to statistical multiplexing; another example, the MWDM solution proposed by China Mobile will be widely used in 5G front-haul application, this is a semi-active WDM (passive far-end and active near-end), which doubles the CWDM 6-wavelength, which can quickly meet the needs of a single-site 12-wavelength 6*25G mainstream site model at low cost.