光通信与 CPO：AI 集群互连升温
Optical & CPO: AI cluster interconnect heats up
Ottica e CPO: interconnessione dei cluster AI
Optik & CPO: AI-Cluster-Interconnect
光通信と CPO：AI クラスター相互接続
随着训练集群规模扩大，机柜内外互连带宽成为瓶颈。共封装光学（CPO, co-packaged optics）与传统可插拔光模块，同时进入市场讨论。
As training clusters scale, rack- and fabric-level bandwidth is the bottleneck. Co-packaged optics (CPO) and traditional pluggable modules are both in focus.
Con la crescita dei cluster di training, la banda rack e fabric è il collo di bottiglia. CPO e moduli pluggable sono entrambi sotto i riflettori.
Mit wachsenden Trainingsclustern wird Bandbreite auf Rack- und Fabric-Ebene zum Engpass. CPO und steckbare Module stehen im Fokus.
訓練クラスターの拡大で、ラック内外の帯域がボトルネックに。CPO と従来のプラガブル光モジュールがともに議論されています。
市场把「光通信 / CPO」主题拆成几层：交换机侧的光学引擎、激光与调制器供应链，以及 GPU / 加速器厂商对网络延迟与功耗的要求。NVIDIA（英伟达, NVDA）仍是算力侧的锚点；光学名单里常见 Lumentum（LITE）、Applied Optoelectronics（AAOI）等组件与模块商。
讨论焦点通常不是「某一天涨跌」，而是：CPO 量产节奏是否领先可插拔方案、800G / 1.6T 升级周期，以及激光器供给是否跟得上。软件侧另有一条并行叙事——生成式 AI 对创意与办公工具的替代压力，Adobe（ADBE）等名字常被一并提及，但逻辑链条与光学硬件并不相同。
怎么看
- 区分硬件互连（光模块、CPO、激光）与软件替代两条线，避免混为一谈。
- 关注带宽升级节点与客户资本开支指引，而不是单一标题。
- 在 股票 页可按代码筛选相关标的。
Markets break the optical / CPO theme into layers: switch-side optical engines, laser and modulator supply chains, and GPU / accelerator vendors’ latency and power budgets. NVIDIA (NVDA) remains the compute-side anchor; optical names often include Lumentum (LITE), Applied Optoelectronics (AAOI), and peer module makers.
The debate is rarely about a single day’s move. It is about whether CPO ramps ahead of pluggables, the 800G / 1.6T upgrade cycle, and whether laser supply keeps up. A parallel narrative sits on the software side—generative AI pressure on creative and office tools—where Adobe (ADBE) often appears, but the logic chain differs from optical hardware.
How to read it
- Separate hardware interconnect (modules, CPO, lasers) from software substitution; do not conflate them.
- Watch bandwidth upgrade milestones and customer capex guidance more than one-off headlines.
- Filter related tickers on the Stocks page.