optical_io

by Andy Sun (achoenix@gmail.com)

Last update: 2025/10/04

Site Navigation

• Homepage
• Silicon Photonics
  • TSMC
• Co-Packaged Optics
  • NVIDIA CPO
  • Light Source
  • Coupling
• Optical Interposer
• Optical Transceiver
• AI Chip
• System Design
  • NVIDIA System
  • Google System
  • Huawei System

License & Citation

Co-Packge Optics (CPO)

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Timeline

Commercialization

Nvidia CPO Resiliency (Dec 2025)

• 10x resiliency CPO vs pluggable
• 5x improvement in GPU utilization efficiency

Ref:

• TEF

Broadcom Gen3 CPO Annoucement (May 2025)

• 200G/lane
• for both scale-out and scale-up

Ref:

• Broadcom
• 2

Nvidia InfiniBand and Ethernet CPO switches (Mar 2025)

• 200G/lane

Ref:

• GTC

Product & Technology

Broadcom CPO Reliability (Oct 2025)

• 1M device hours (400G equivalent port) of flap-free CPO operation at Meta
• 65% power reduction in optics

Ref:

• Broadcom
• ECOC

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CPO Implementations

NVIDIA

Broadcom

AyarLabs

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