数据中心光纤

Core Insights - Data center optical fibers are essential infrastructure for high-speed data transmission, supporting technologies like cloud computing, big data, and artificial intelligence [1][4] - The data center optical fiber market is projected to reach $60.75 billion by 2032, with a compound annual growth rate (CAGR) of 12.99%, driven by the proliferation of cloud computing, surging demand for AI model training, and the explosion of data traffic from 5G networks [4] Group 1: Types of Optical Fibers - Data center optical fibers are mainly categorized into single-mode and multi-mode fibers [1] - Single-mode fibers (e.g., OS2) have a small core diameter (approximately 9 microns) and are suitable for long-distance, high-bandwidth applications, supporting transmission over distances greater than 10 kilometers with losses as low as 0.2 dB/km [1] - Multi-mode fibers (e.g., OM3/OM4) have a larger core diameter (50 or 62.5 microns) and are designed for short-distance connections (up to 300 meters), offering lower costs and compatibility with VCSEL laser technology [3] Group 2: Technological Trends - Data center optical fibers are evolving towards higher bandwidth and lower latency [3] - High-speed optical modules like QSFP28 and QSFP-DD support transmission rates from 100 Gbps to 400 Gbps, utilizing PAM4 modulation technology to enhance spectral efficiency for massive data interactions in 5G and AI scenarios [3] - Optimized cabling architectures, such as the Leaf-Spine architecture, separate spine and leaf switches to achieve low-latency east-west traffic, accommodating thousands of servers and becoming the preferred choice for large data centers [3] Group 3: Emerging Technologies - New fiber technologies, such as hollow-core fibers, transmit light signals through an air core, achieving losses below 0.1 dB/km and theoretically supporting full-band transmission with low latency and non-linearity [4] - Microsoft plans to deploy 15,000 kilometers of hollow-core fiber for interconnecting intelligent computing centers, indicating a significant shift in optical fiber technology [4]