Certified Co-packaged Optical 400G

CE-certified 400G co-packaged optics (CPO) integrate coherent optical transceivers with electronics in compact modules, offering high-speed, power-efficient, and interoperable solutions for data centers and telecom networks. Overview of 400G Co-Packaged OpticsCo-packaged optics (CPO) merge optical and electronic components into a single package, significantly improving power efficiency, bandwidth density, and signal integrity compared to discrete designs. These devices are particularly suited for high-bandwidth switches, data center interconnects (DCI), metro, and long-haul networks.

By integrating the Digital Signal Processor (DSP) and silicon photonics-based coherent optical sub-assemblies (COSA), CPO modules reduce PCB complexity and allow compact form factors suitable for pluggable modules.

Key Features

Standards Compliance: Many 400G CPO devices follow OIF 400ZR and OpenZR+ Multi-Source Agreement (MSA) specifications, ensuring interoperability across vendors.

C

E certification ensures compliance with European safety, health, and electromagnetic compatibility standards.

High-

Speed Transmission: Supports 400G coherent transmission with advanced modulation formats like DP-16QAM, QPSK, or 8QAM, enabling distances from ~40 km (unamplified) to ~600 km (amplified) depending on the variant. Compact Form Factor: Co-packaged devices reduce overall module dimensions by ~30% compared to discrete designs, enabling integration of additional components like EDFA for 0dBm output. Power Efficiency: Optimized for low power consumption, critical for data center and edge deployments where thermal management is a concern.

Flexible Deployment: Suitable for pluggable modules (QSFP-DD, OSFP), supporting DCI, metro, and long-haul networks, and compatible with multi-vendor environments.

Leading Products and Implementations

Juniper JCO400 Series: Coherent pluggable transceivers supporting 400ZR and OpenZR+ standards, integrated with Junos OS for simplified configuration and monitoring.

NT

T Electronics ExaLIGHT 400: A 400G coherent co-packaged device combining 64Gbaud DSP and silicon photonics COSA in a single package, non-hermetic and TEC-free, optimized for small form factor pluggable modules.

Corning CP

O Solutions: Focused on high-density switch optics, enhancing bandwidth and reliability for AI and machine learning workloads in data centers. Considerations for CE-Certified DeploymentInteroperability: Ensure the module follows OIF 400ZR or OpenZR+ standards for multi-vendor compatibility. Thermal Management: Co-packaged optics reduce power but require careful heat dissipation planning in dense switch environments.

Distance and Modulation: Choose the appropriate variant (ZR, ZR+, MZR) based on reach requirements and fiber type. Regulatory Compliance: CE certification confirms adherence to European safety and EMC standards, which is essential for deployment in EU regions. ConclusionCE-certified 400G co-packaged optical devices provide a high-performance, compact, and interoperable solution for modern high-speed networks.

They combine coherent optics, DSP, and silicon photonics in a single package, supporting a range of applications from data center interconnects to long-haul transport, while ensuring compliance with European safety and electromagnetic standards. Leading implementations from Juniper, NTT Electronics, and Corning demonstrate the maturity and scalability of this technology for enterprise and carrier networks.