Skip to content High-speed data center interconnection (DCI) technology is a key infrastructure in the current era of cloud computing, artificial intelligence (AI) and big data. It can connect multiple data centers and make high speed, low latency and safe data transmission possible.
Yingda can provide a variety of fiber optic products suitable for DCI, including optical modules, WDM modules, and fiber optic patch cords, whose selection requires comprehensive consideration of factors such as transmission distance, bandwidth requirements, cost budget, and operational capabilities. Please contact us if you have any needs.
Suitable for short-distance, low-cost DCI scenarios within 80km.
Suitable for medium- to long-distance high-speed transmission (80-500km) and cross-data center interconnection.
It is suitable for interconnecting ultra-long-distance AI computing power clusters with a distance of >500km and is currently in the testing phase.
Suitable for most DCI scenarios, low cost but high loss.
Suitable for ultra-long-distance DCI (such as the "East Data West Computing" project), with losses as low as 0.16dB/km.
Microsoft, China Telecom, and others are testing a technology that increases light speed by 30% and reduces latency by 23%, making it suitable for ultra-low latency interconnection of AI computing power clusters.
It supports multi-wavelength transmission, such as 400G/800G DWDM systems, and is suitable for high-capacity DCI.
Used for short-distance interconnection within or between racks in a 7-10m data center, such as connecting servers to TOR switches or connecting storage devices.
It is an ideal solution for high-bandwidth, short-distance connections used for high-speed data transmission between servers, switches, and storage devices with distances exceeding 7-10 meters or requiring higher signal stability.
In addition to the products mentioned above, CDI systems actually require many other products, software, and equipment. Factors such as distance, bandwidth, cost, and operational complexity need to be considered comprehensively, and can be summarized in the table below:
Factor | Short distance (<80km) | Medium and long distance (80~500km) | Ultra long distance (>500km) |
Optical module | 100G/400G PAM4 LR4 | 400G/800G ZR/ZR+ | 800G ZR+/1.6T |
Optical fiber | G.652.D | G.654.E | Hollow Core Fiber (HCF) |
Transmission equipment | Non-coherent DCI BOX Coherent DCI BOX Ultra-long-haul DWDM system | Non-coherent DCI BOX Coherent DCI BOX Ultra-long-haul DWDM system | Non-coherent DCI BOX Coherent DCI BOX Ultra-long-haul DWDM system |
Typical applications | Park interconnection | Inter-city interconnection (such as East-West computing) | Cross-border AI computing cluster interconnection |
In the future, with the increasing demand for AI computing power, 800G/1.6T coherent optical modules and hollow-core optical fibers will become the mainstream technologies for DCI (Digital Computing). Yingda will also continue to launch optical fiber products that meet market demands as technology advances.
They operate on different technical principles. QPSK and 8QAM modulation methods are coherent optical modules, while PAM4 and NRZ modulation methods are incoherent optical modules. The lasers used are also different.
Data center interconnects (DCI) and intra-server interconnects frequently use AOC active optical cables due to their advantages such as long transmission distance (typically over 100 meters), light weight, low power consumption, and strong resistance to electromagnetic interference. They are widely used for high-speed data transmission between servers, switches, and storage devices, making them an ideal solution for high-bandwidth, short-distance connections.
Data center interconnects definitely use DAC cables (direct-attach cables / high-speed copper cables) because of their low latency, high bandwidth, low power consumption (passive cables consume almost no power), and high cost-effectiveness. They are widely used for short-distance interconnects within racks or between adjacent racks within data centers, such as connecting servers to TOR switches or connecting storage devices.
A data center (DC) is a physical location that centrally houses computer systems and related components (such as telecommunications and storage systems). It includes racks, servers, switches, cooling systems, and power supplies. Data center interconnect (DCI) is a technological solution or infrastructure used to connect two or more geographically dsispersed data centers, enabling them to share data, applications, and resources.
High productivity efficiency, skilled front-line operators and strict production control ensure timely delivery.
High-precision testing equipment and top industry quality control system ensure high quality standards.
Long-term stable supply chain and cost control that changes in line with market trends ensure the best price.
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