
Co-Packaged Optics – End of Pluggables? What It Is, Why It Matters,
What Is Co-Packaged Optics (CPO)? CPO is a network architecture that integrates optical transceivers directly into

What Is Co-Packaged Optics (CPO)? CPO is a network architecture that integrates optical transceivers directly into

CPOs enable a credible path to sub pJ /bit by placing the optical engine directly adjacent to, or within the same

None of this argues against CPO. It explains why, in 2026, co-packaged optics is roughly 0.5% of optical modules in AI

A failure in an optical engine might require replacing an entire CPO switch line card or server board rather than just

Co-Packaged Optics is an advanced integration approach that embeds optical interconnects and electronic components within a

Co-packaged optics (CPO) technology, a key enabler for next-generation data center architectures, promises

The emergence of co-packaged optical modules (CPOs) is gradually changing the way data centres and high

Co-packaged optics CPO seeks to mitigate power consumption issues in data centers by placing the optical engine

From Jensen Huang showcasing CPO switches at GTC 2025 to a wide range of vendors demonstrating optical engines

Data centers, cloud providers, and HPC companies use CPO. They get faster speeds, lower energy costs, and can

The optical engine is the core of CPO; it converts between the optical and electrical domains. Since the OE is on

In this scenario, Co-Packaged Optics (CPO) is now gaining momentum, emerging mainly as an alternative to the

In CPOs, replacing optics involves pulling out the entire switch, requiring a level of expertise to perform a complex

Co-packaged optics (CPO) is an optical packaging method with broad application prospects. It can integrate optical

Co-Packaged Optics (CPO) presents a promising solution to these challenges. Unlike traditional pluggable

In high-speed optical communication, optical modules are traditionally packaged as separate devices where optical

1.3. Introduction The CPO JDF plans to release three documents focused on different elements of Co-Packaged Optics (CPO): the

This article explains the basic concepts of optical communication, the evolution of Silicon Photonics, how the industry

This enables CPOs to have a smaller footprint and larger bandwidth density, which allows the CPO modules to be placed closer to

The success of CPOs depends on effective collaboration between optical suppliers, module vendors, and data center operators to

External Laser Sources (ELSFP): Independent laser modules providing CW light for CPOs, offering higher reliability at

Broadly speaking, if all non-hot-pluggable optical modules are categorized as CPO (Co-Packaged Optics), then the

However, in the current 1.6T era, pluggable optical modules still provide a mature mainstream solution, and their

Ansys Lumerical and Zemax toolsets provide the best-in-class solutions to simulate and design complete optical coupling systems for

While analyst firms such as LightCounting predict that optical modules will continue to constitute the majority of optical

By increasing the interconnect density between optical modules and ASIC chips while reducing power consumption,

The modules utilize an electrical interface between the module and the switch/router ASIC in the network device.

The optical-to-electrical conversion that is performed by the optical transceiver is still needed in a CPO system, but it

The light engines are driven by 16 laser modules, which are connected to the faceplate for better serviceability.

Co-Packaged Optics (CPO) is an advanced integration of optics and silicon on a single packaged substrate addressing interconnect
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