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AI 大模型狂飙,谁在打通算力 “超级通道”?

AI 大模型狂飙,谁在打通算力 “超级通道”?

随着AI算力爆发式增长,千卡、万卡级智算集群已成为算力竞争的核心载体。分布式训练对数据传输的时延、带宽和损耗提出了极致要求,使得数据中心之间的长距离互联成为影响大模型训练效率的关键环节。高速光互联,正因此成为AI领域竞争的新焦点

在现有传输方案中,传统石英光纤以其成熟稳定的性能支撑了全球光通信网络的多年发展,但面对智算中心场景下极致低时延、超大带宽和超长距离传输的需求时,光在玻璃介质中传输所固有的物理特性——如时延、非线性效应和色散累积——开始成为系统进一步提升效率的瓶颈。

数据流量的飞涨,对智算中心组网提出了更高要求,迫切需要更低时延、更低损耗以及更低非线性效应的光纤产品。

光在物理介质中传输时,光速会出现下降,而在真空中的传输速率则是一个不变的物理常数。通过改变介质本身,突破光速物理极限,构造AI时代的超级传输通道,成为解题新思路。空芯光纤,即是这一思路落地的载体。

空芯光纤的核心设计的是将传统实芯光纤的玻璃纤芯“掏空”,构建中空的空气传输通道,让光信号在空气中完成传输。但这一设计面临着核心难题:光在空气中极易扩散泄漏,无法实现长距离稳定传输。

为解决这一问题,长飞公司研发的反谐振空芯光纤给出了成熟方案——通过内部精密设计的多层“反谐振管”,如同为光信号搭建了专属“护栏”,有效阻止光从核心区域泄漏出去,实现可靠的光约束。

与传统实芯光纤相比,空芯光纤的性能实现了跨越式提升。长飞公司在2026MWC巴塞罗期间发布最新成果,将光纤损耗纪录刷新至0.04dB/km,相较传统实芯光纤时延降低31%,传输速度提升47%,非线性效应几乎归零,为智算中心互联构建了突破极限的超级通道。

空芯光纤的技术理念虽早已提出,但从实验室研发到规模化商用,面临着制备工艺复杂、熔接难度高、产业链不完善等诸多挑战。

长飞公司凭借多年的技术积累,以持续创新逐步攻克了这些难题,实现了空芯光纤的商用落地,走出了一条从实验室技术研发到产业应用的完整路径。

长飞空芯光纤关键数据:

实现全球最低衰减0.04dB/km

时延降低31%,传输速度提升47%

单根光纤长度达91.2km

空芯-空芯熔接损耗低至0.05dB

在技术部署层面

长飞公司已实现单根91.2公里空芯光纤的制备(全球最长),空芯-空芯熔接损耗低至0.05dB,解决了空芯光纤规模化应用的核心制造难题。

在商用部署层面

长飞公司助力中国移动、中国电信、中国联通分别完成其全球首条空芯光纤商用线路部署,并已在亚洲、欧洲、美洲等地区成功部署10+商用及试点项目,验证了空芯光纤在实际应用中的可靠性与优越性。

在标准与生态构建层面

长飞公司发起了INFINITE-2030计划,联合全球运营商、云服务商等行业伙伴,致力于推动涵盖空芯光纤、光缆、连接器及传输系统等国际标准制定,目标在未来落地50+商用及试点项目,推动空芯光纤产业生态的规范化、规模化发展。

AI时代的竞争,不仅是算力芯片的竞争,更是连接效率的竞争。空芯光纤可有效解决智算中心GPU集群规模提升带来的海量数据同步需求,提升智算集群枢纽间的训练效率,打破数据中心同城双活因时延造成的距离限制,助力锻造超低时延智算集群,为AI数字经济发展筑牢“生命线”。

从玻璃到空气,是一次传输介质的跨越,更为AI时代的算力互联打开了无限可能。未来,它将成为AI数字生命线中的“超级通道”,让数据在算力与连接之间光速流转,为人工智能创新注入澎湃动力。

     作者简介     

张磊,现任光纤光缆先进制造与应用技术全国重点实验室副主任,拥有逾16年光通信行业从业经验。他主导了长飞公司空芯光纤的落地交付,为AI数据中心的光互联提供创新的空芯光纤解决方案,并致力于构建完善的空芯光纤生态体系,持续为全球客户创造价值。

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  1. CONNECT:[ UseTime:0.001063s ] mysql:host=127.0.0.1;port=3306;dbname=wenku;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001350s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000529s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.000447s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000869s ]
  6. SELECT * FROM `set` [ RunTime:0.000349s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.000931s ]
  8. SELECT * FROM `article` WHERE `id` = 665878 LIMIT 1 [ RunTime:0.003082s ]
  9. UPDATE `article` SET `lasttime` = 1779886467 WHERE `id` = 665878 [ RunTime:0.002371s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 64 LIMIT 1 [ RunTime:0.000910s ]
  11. SELECT * FROM `article` WHERE `id` < 665878 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.001280s ]
  12. SELECT * FROM `article` WHERE `id` > 665878 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.001126s ]
  13. SELECT * FROM `article` WHERE `id` < 665878 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.002170s ]
  14. SELECT * FROM `article` WHERE `id` < 665878 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.001868s ]
  15. SELECT * FROM `article` WHERE `id` < 665878 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001895s ]
0.128546s