1. Forum Overview

 

◦ Time: 14:00 - 16:30, April 17, 2025

 

◦ Theme: Ultra - large - scale Intelligent Computing Center: All - Optical Interconnection in the 1.6T Era

 

◦ Guest Speaker: Zhao Wenyu, Deputy Director of the Institute of Technology and Standards, China Academy of Information and Communications Technology;

Tan Benming, the new Product Development Manager of Coherent's strategic market;

Cheng Weiqiang, Deputy Director of the Institute of Basic Network Technology, China Mobile Research Institute;

Liu Xiaoni, Senior Technical Expert of Huawei Technologies Co., LTD;

Wang Peng, Technical Expert from Alibaba Cloud Computing Co., LTD;

Liang Yuxin, Technical Manager of United Microelectronics Center Co., LTD;

Dr.Vladimir Kozlov, CEO, Lightcounting LLC

 

2. Industry Policies and Demand Trends

 

◦ Policies promote the development of computing power infrastructure. The demand for intelligent computing power is surging, and the construction of high - performance intelligent computing center networks has drawn attention.

 

◦ The intelligent computing network has become a bottleneck for AI cluster computing power, and 1.6T Ethernet has attracted industry attention.

 

3. Progress in Optical Communication Technologies

 

◦ Rate Enhancement

 

◦ New 400G solutions and the construction of the 800G+ standard system. 800G will dominate short - distance interconnections, and 1.6T will be gradually applied.

 

◦ The interconnection rate of long - distance coherent transmission continues to increase.

 

◦ High - efficiency Technologies

 

◦ The exploration of linear schemes (LPO, LRO) is accelerating, and the testing of electrical interface indicators has drawn attention.

 

◦ CPO remains a hot topic and will co - exist and develop with pluggable modules.

 

◦ OIO for high - speed interconnection in computing and storage continues to evolve.

 

◦ New types of optical fibers (ultra - low - loss optical fibers, hollow - core optical fibers) help build high - speed and low - latency channels.

 

◦ Silicon Photonics Technology: Its application advantages and potential have attracted attention, and its manufacturing has drawn the attention of industry giants.

 

◦ AI Assistance: AI improves the operation and maintenance efficiency of optical interconnections in intelligent computing centers, and IPEC is carrying out relevant standardization work.

 

4. Advantages and Development Directions of 1.6T Ethernet

 

◦ Improve system interconnection efficiency and reduce overall power consumption and costs.

 

◦ Focus on scenarios within 2km in intelligent computing centers. 200G MMF and 400G/L are the evolution directions. 1.6T ZR/ZR+ will become the mainstream for inter - intelligent - computing - center connections.

 

5. Optical Interconnection Solutions for Intelligent Computing Centers (Taking Huawei DC - OXC as an Example)

 

◦ Large - scale: Build a stable foundation based on DC - OXC, which can smoothly evolve towards ultra - large - scale clusters with over ten - thousand cards. It has a low initial investment threshold and excellent scalability.

 

◦ High - performance: The photoelectric hybrid networking performance is superior to CLOS electrical networking, with reduced latency, fewer Hash conflicts, and improved JCT performance.

 

◦ High - reliability: Compared with all - electrical solutions, the MTBF of the parameter - side network is increased by more than 20%, and the proportion of optical module failures is reduced.

 

◦ Application Scenarios

 

◦ In reasoning clusters, the optical solution has obvious advantages in terms of latency and reliability.

 

◦ It can take over FA ports, support adjustable FA uplink - downlink ratios, and enable flexible capacity expansion.