DWDM wavelengths
A dedicated channel on our optical line system between two European metros. No shared packet layer, no contention, and latency that only depends on the fibre route.
A wavelength is the closest thing to your own fibre without buying the fibre. You hand us a client interface at each end, we carry it as a dedicated channel across our optical layer, and nothing else touches it along the way.
The optical layer is engineered rather than ordered. Channel plans, launch levels and the margin we design to are ours to specify on the routes we run, and we hold the capacity on those routes rather than buying a circuit each time one is asked for. So when a customer wants a wavelength on a corridor we already light, adding a channel is a provisioning task rather than a construction project.
We also carry alien wavelengths. If you prefer to own the transponders and run your own optics, we will do the engineering to confirm the route supports it and hand you the channel.
Optical detail
| Client interfaces | 10GBASE-LR, 100GBASE-LR4, 400G ZR and ZR+ subject to reach |
| Line system | Amplified DWDM with the channel plan, launch levels and margin engineered by us |
| Channel spacing | 100 GHz fixed grid, flex grid on selected routes |
| Protection | 1+1 optical protection on routes with physical diversity |
| Monitoring | Per-channel optical power and pre-FEC BER, visible in the control panel |
| Latency | Quoted per route from the actual fibre length, not a straight-line estimate |
| Handoff | Single-mode LC in your rack or ours, cross connect arranged by us |
Where we light channels
Wavelengths are available between any pair of metros on our footprint. The corridors below are already lit and can usually be delivered fastest.
- Latency-sensitive routes engineered for the shortest fibre path available
- Diverse second channel on a physically separate route where you need protection
- Bundled with dark fiber where you want capacity now and fibre later
Tell us the two ends and the rate
We will confirm the route, the expected latency and whether the channel is available on our current line system or needs a build.