移动通信网 程然
美国光纤接入市场再次向前迈出一大步。设备商 Calix 与运营商 Astound 宣布完成 50G-PON 现场试验，验证了下一代无源光网络技术在商用网络环境下的可行性。这是北美宽带市场在 25G-PON 之后向更高速率演进的最新实践，也标志着 50G-PON 从实验室走向现网的进程明显加快。对于正在推进万兆光网建设的全球运营商而言，这一试验结果提供了有价值的参考。
试验落地：50G-PON 走出现网第一步
本次试验由 Calix 提供平台侧解决方案，Astound 在其现网环境中完成部署与验证。Astound 是美国规模排名靠前的区域性宽带运营商，服务覆盖多个州的光纤与有线电视用户，近年来持续推进网络光纤化改造。选择在真实运营网络上开展试验而非实验室环境，意味着 50G-PON 需要兼容现网的光分配网络（ODN）基础设施，包括分光器、光缆和已部署的终端设备，这对技术的向后兼容能力提出了实际考验。
从技术路线看，50G-PON 遵循 ITU-T 制定的 G.hsp 标准体系，是 GPON/10G-PON（XGS-PON）之后的下一代演进方向。其核心优势在于单波长即可实现 50Gbps 下行速率，并支持与现有 PON 代际在同一 ODN 上共存，运营商无需重建光纤基础设施即可平滑升级。对于已经完成 FTTH 覆盖的运营商来说，这是保护既有投资、按需提速的关键路径。
【关键数据】
- 下行速率: 50Gbps，约为当前主流 XGS-PON 的 5 倍（核心指标）
- 标准体系: ITU-T G.hsp 系列标准
- 平滑升级: 支持与 GPON/XGS-PON 共存于同一 ODN
- 试验完成时间: 2026 年 9 月
竞争格局：高速率接入竞赛升级
在全球宽带市场竞争加剧的环境下，50G-PON 正在成为头部运营商和设备商竞逐的焦点。此前已有多个市场的运营商完成 50G-PON 试点，中国运营商也在万兆光网试点城市中部署了 50G-PON 技术方案，设备侧则有华为、中兴、诺基亚贝尔等多家厂商推出商用产品。Calix 作为北美市场重要的接入网设备供应商，此次与 Astound 的合作意在巩固其在北美光纤升级周期中的位置。
推动这一轮升级的驱动力主要来自两方面：一是 AI 应用、云游戏、超高清视频等业务对家庭和企业接入带宽的持续拉动，多千兆套餐正在成为竞争标配；二是 DOCSIS 4.0 等 cable 技术路线的推进，迫使光纤运营商通过更高速率保持体验代差。50G-PON 提供的容量冗余，也为运营商面向企业专线、移动回传等场景拓展收入提供了网络基础。
商用展望：规模化仍需成本与需求双轮驱动
从产业链现状看，50G-PON 的光模块成本和终端价格仍高于 XGS-PON 数倍，规模化商用需要芯片方案成熟和出货量提升来摊薄成本。短期内，50G-PON 更可能优先落地在对带宽敏感的企业客户、园区和精品网场景，家庭市场的全面普及仍需等待需求侧的明确信号。不过，随着更多运营商完成现网验证，50G-PON 的商用时间表正在从"远期选项"变为"近期规划"，万兆接入时代的基础设施竞争已经拉开序幕。
出处：Calix, Astound complete 50G-PON trial
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# Calix, Astound complete 50G-PON trial
Calix and Astound announced the successful completion of a 50G-PON trial, demoing a path to growth without network overhauls. #pressrelease
September 29, 2026
1 Min Read
[](http://www.facebook.com/sharer/sharer.php?u=https://www.lightreading.com/optical-networking/calix-astound-complete-50g-pon-trial)[](https://www.linkedin.com/sharing/share-offsite/?url=https://www.lightreading.com/optical-networking/calix-astound-complete-50g-pon-trial)[](http://www.twitter.com/intent/tweet?url=https://www.lightreading.com/optical-networking/calix-astound-complete-50g-pon-trial)[](https://bsky.app/intent/compose?text=Calix%2C%20Astound%20complete%2050G-PON%20trial%20-%20https%3A%2F%2Fwww.lightreading.com%2Foptical-networking%2Fcalix-astound-complete-50g-pon-trial)[](mailto:?subject=Calix,%20Astound%20complete%2050G-PON%20trial&body=I%20thought%20the%20following%20from%20Light%20Reading%20might%20interest%20you.%0D%0A%0D%0A%20Calix%2C%20Astound%20complete%2050G-PON%20trial%0D%0Ahttps%3A%2F%2Fwww.lightreading.com%2Foptical-networking%2Fcalix-astound-complete-50g-pon-trial)
[Calix, Inc.](https://cts.businesswire.com/ct/CT?id=smartlink&url=https%3A%2F%2Fwww.calix.com%2F&esheet=54612905&newsitemid=20260929792571&lan=en-US&anchor=Calix%2C+Inc.&index=1&md5=32148c5e01ac78466b6d38109322f473&_gl=1*edau6e*_gcl_au*MTgyMzUzMTQ2MC4xNzkwNzA4NTMx*_ga*MTY0MzUyMDM3LjE3OTA3MDg1MzI.*_ga_ZQWF70T3FK*czE3OTA3MDg1MzEkbzEkZzEkdDE3OTA3MDg2NTYkajYwJGwwJGgw) (NYSE: CALX) today announced that [Astound](https://cts.businesswire.com/ct/CT?id=smartlink&url=https%3A%2F%2Fwww.astound.com%2F&esheet=54612905&newsitemid=20260929792571&lan=en-US&anchor=Astound&index=2&md5=93a58a10734c1de0173fee008935a5e3), a recognized leader in Wi-Fi, mobile, TV, and fiber optic solutions, has successfully completed a trial of the [Calix 50G-PON](https://cts.businesswire.com/ct/CT?id=smartlink&url=https%3A%2F%2Fwww.calix.com%2Ftechnologies%2F50g-pon.html&esheet=54612905&newsitemid=20260929792571&lan=en-US&anchor=Calix+50G-PON&index=3&md5=3d489928e2053fc8324f4dd614eaec59) (passive optical network) access solution. By enabling 50 gigabits per second of downstream speeds and flexible upstream speeds, the trial demonstrated how Astound can build upon their existing network and operational investments to deliver high-capacity, multi-gig converged services for both commercial and residential customers on a single, unified network where and when opportunities arise.
The trial also highlights that Astound can opt to rapidly and cost-effectively deploy 50G-PON offerings to pursue growth across residential, business, wholesale, and multi-tenant markets, as access innovation continues to advance for the [Calix One](https://cts.businesswire.com/ct/CT?id=smartlink&url=https%3A%2F%2Fwww.calix.com%2Fproducts%2Fplatform.html&esheet=54612905&newsitemid=20260929792571&lan=en-US&anchor=Calix+One&index=4&md5=d0d701e021229e369b701426d0489e06)? platform. Building on more than a decade of collaboration, the trial reinforced the Calix commitment to open, standards-based interoperability—giving Astound greater flexibility and choice as the high-speed 50G-PON component ecosystem evolves.
Related:[Vocus warns on subsea capacity crunch](https://www.lightreading.com/optical-networking/vocus-warns-on-subsea-capacity-crunch)
Across the industry, service providers are recognizing a growing demand for enterprise- and carrier-grade connectivity along with other bandwidth-intensive services. Accordingly, their needs—including flexibility to add greater capacity, dedicated access, wholesale transport, mobile x-haul, and support for high-density multi-tenant environments—are expanding.
During their trial, Astound validated that 50G-PON operates seamlessly alongside their existing [XGS-PON](https://cts.businesswire.com/ct/CT?id=smartlink&url=https%3A%2F%2Fwww.calix.com%2Ftechnologies%2F10g-pon.html&esheet=54612905&newsitemid=20260929792571&lan=en-US&anchor=XGS-PON&index=5&md5=f10dfa3d5cf625709b70645919ad1970)-enabled infrastructure, using the same [AXOS](https://cts.businesswire.com/ct/CT?id=smartlink&url=https%3A%2F%2Fwww.calix.com%2Fproducts%2Fplatform%2Fintelligent-access.html&esheet=54612905&newsitemid=20260929792571&lan=en-US&anchor=AXOS&index=6&md5=30ec11730d94a1aa1db48388e3d894d6)?-powered operational model, workflows, and back-office integrations that support their business today. By leveraging a platform approach with the Calix One access solution, Astound can deploy services faster and evolve next-generation experiences in any market—without overhauling their network.
Read the full press release [here.](https://www.businesswire.com/news/home/20260929792571/en/Calix-and-Astound-Complete-Successful-50G-PON-Trial-Demonstrating-a-Path-to-Rapid-Growth-Without-Network-Overhauls)
[Astound](https://www.astound.com/)
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