AFL：2025超大规模与AI数据中心模场直径（MFD）研究报告（英文版）（12页）.pdf

1、Understanding Mode Field Diameter(MFD)in Hyperscale and AI Data Centers2Copyright 2025 AFL.All rights reserved.This white paper continues our series aimed at clarifying the technical nuances of deploying single-mode optical fber in modern,large-scale data centers.These environments include enterpris

2、e,colocation,hyperscale,and AI-specifc infrastructures.This installment focuses on Mode Field Diameter(MFD),a crucial yet often overlooked fber characteristic that infuences installation,performance,and testing methodologies.By addressing MFD and the associated implications,the paper seeks to clarif

3、y fbers intricate properties to beneft readers of all experience levels,including designers,installers,and operators.Applications inside the data center:MFD plays a signifcant role in transmission effciency at the 1310 nm wavelength inside the data center.For more information on single-mode bend req

4、uirements in high-performance data center environments,please download part one in the series:-Single Mode Fiber Bend Requirements in the Data Center This series will also explore the signifcance of micro-bending in deploying ultra-high fber count cables.Alan KeizerSenior Technology Advisor,AFLDavid

5、 TanisSenior Product Line Manager,AFLKeith SullivanDirector of Stategic Innovation,AFLPaige JamesDesign Manager,AFLBen AthertonTechnical Author,AFL ContributorsPrologue3Copyright 2025 AFL.All rights reserved.3Specifcally,MFD is the diameter of the circle at which the optical intensity has fallen fro

6、m its peak value at the center of the core to a prescribed minimum value of intensity(decreased by 1/e2,where e is the base of the Natural Logarithm).The MFD of a fber is somewhat larger than the physical core,increasing at longer wavelengths and decreasing when the refractive index difference of th