Cost-Effective AI and Data Centre Networking with 8/16-Channel O-Band DWDM

However, maximum transmission capacity alone is not enough. Low cost per connection, efficient fibre utilisation, and a scalable architecture are equally important. This is precisely where O-Band DWDM offers an attractive alternative to traditional C-Band and multi-fibre solutions.

More Bandwidth on a Single Fibre Pair

An 8/16-channel O-Band DWDM multiplexer combines multiple closely spaced wavelengths in the 1310 nm range onto a single pair of single-mode fibres. This allows several optical channels to be transmitted simultaneously without requiring a dedicated fibre pair for each connection.

For operators of AI data centres, HPC environments, and DCI networks, this means significantly greater bandwidth can be delivered over existing fibre infrastructure. This is particularly attractive where fibre resources are limited or represent a significant cost factor.

Ideal for Short, High-Performance Links

The O-Band is particularly well suited to high-bandwidth applications over short to medium distances. Typical use cases include AI clusters, HPC environments, and data centre interconnects.

A key advantage is the very low chromatic dispersion around 1310 nm. As a result, optical systems can often be designed more simply than many conventional C-Band solutions. In numerous applications, highly complex coherent optics, extensive dispersion compensation, and sophisticated transmission architectures are not required. This reduces technical complexity while improving the overall economics of the solution.

Scaling Economically

For data centre connections of up to approximately 30 km, O-Band DWDM can offer compelling economic advantages. While C-Band technologies demonstrate their strengths in metro and long-haul environments, O-Band is often the more cost-efficient choice for short-distance, bandwidth-intensive applications.

The high channel density enables additional capacity to be added gradually without the need to allocate a separate fibre pair for every new channel. This makes the solution ideal for organisations expanding their AI or data centre infrastructure while maintaining control over fibre and transmission costs.

Typical Cost Comparison

O-Band DWDM is particularly attractive where high bandwidth, short distances, and efficient use of existing fibre infrastructure are key requirements. C-Band remains the preferred choice for longer distances and traditional metro and long-haul applications.

Compatible with Leading Platforms

The O-Band modules comply with QSFP28 MSA and SFF-8636 standards. This ensures compatibility with a wide range of industry-standard switches and routers, including platforms from Arista Networks, Juniper Networks, and Cisco Systems.

For network operators, this enables straightforward integration into existing infrastructures. Existing platforms can continue to be used while optical transport capacity is expanded as required.

The Key Advantage

The key strength of the 8/16-channel O-Band DWDM solution lies in its combination of high bandwidth per fibre pair, low dispersion, and a cost-efficient optical architecture. Multiple high-capacity optical channels can be deployed over a single fibre pair.

Where C-Band systems are often less economical for short-distance applications, O-Band DWDM provides a compact, energy-efficient, and highly scalable alternative.

Solution Highlights

• 8/16-channel DWDM multiplexers in the O-Band
• Transmission in the 1310 nm wavelength range
• Utilisation of a single pair of single-mode fibres
• QSFP28-compatible O-Band modules
• Standardised according to MSA and SFF-8636
• Ideal for AI clusters, HPC environments, and DCI applications

Our Solution Partner: Smartoptics

For this solution, Trigon relies on Smartoptics, a provider of open optical networking solutions for modern WDM and DCI infrastructures. Smartoptics Open Line Systems are based on the Dynamic Connectivity Platform (DCP) and support open point-to-point, ring, and mesh networks from 1 Gbit/s up to 800 Gbit/s.
The portfolio includes DCP-M as a plug-and-play open line system, DCP-F for active optical transport, DCP-R for ROADM-based metro and regional networks, as well as multiplexers, OADMs, transponders, muxponders, optical transceivers, and the SoSmart software suite.
This makes Smartoptics an ideal complement to the 8/16-channel O-Band DWDM solution for customers seeking high bandwidth, open architecture, simple integration, and long-term investment protection.