Dark Fibre

For a long time Dark Fibre was considered to be a technology restricted to operators. Today, more and more companies are adopting it.

What exactly is Dark Fibre?

Dark Fibre is a raw optical fibre that connects two points and is not yet switched on. It can be powered up according to the demand. Different wavelengths of light represent as many services and potential performance levels. Compared to a conventional fiber that will be pre-configured and limited to the transport of IP flows, Dark Fibre is richer in terms of services. It will enable all types of protocols to be transported:

  • IP

  • Audio

  • Video

  • SAN

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Key Features


Printing is a process for mass reproducing text and images using a master form or template.


Data are units of information, usually numeric, that are collected through observation.


Phone is short for telephone, meaning the instrument used to call others.

What are the benefits of Dark Fibre?

The main advantage of Dark Fibre is its scalability. As the needs increase, we can go from 1 Gbps to 10 Gbps. The only associated cost will be that of the equipment, but it is quite negligible. The same goes for services. If new needs arise, the Dark Fibre is enough to light up new wavelengths.

This technology also offers great technological independence to the customer. The latter can upgrade its services at any time without the constraint of the operators’ packaged offers and the associated construction deadlines. Last but not least, it offers major advantages in terms of availability. Dark Fibre frees operators from the constraints associated with sharing networks. It also offers the possibility of backing up fibre routes and adductions with 100% secure optical loops.

Which of these benefits will trigger further implementation of Dark Fibre?

The need for a very high speed broadband is the main trigger between different buildings and with many networks to transport. This is because the economic equation is quickly positive. Especially when you can put forward a three-year ROI.

On top of that, there is the issue of availability. But for some companies, it’s the need for autonomy over network management. This is impossible with traditional fibre solutions. Those are a particularly decisive factor in their choice.

Fibre optics – the theory

A fibre optic strand is made from very clear glass and is extremely thin; between 125 to 250 microns in diameter. This is about the thickness of a single human hair. The fibre consists of a very thin core that has been fused with a thicker cladding.

To transmit data over long distances, light is sent through the fibre using a laser. The light enters the fibre at an acute angle relative to the outside surface, which causes internal reflection. As a result, the light stays in the fibre.

The speed at which the information can be sent depends on the laser. The faster it sends on and off signals, the faster the rate of data traffic.

Is Dark Fibre accessible to all businesses?

Unfortunately no. There are some restrictions. We can highlight three major criteria that condition the relevance of the Dark Fibre:

  • The geographical area: large cities are by far the most well equipped. The technology will be interesting for companies that need to connect buildings in Australia’s major cities. The distance between the buildings to be equipped is also limited.

  • Usage: the company must have several connection needs for its customer building or data center. This includes LAN extension, storage network, backup network, IP/MPLS network, Internet, others. The more purposes there are, the more the use of Dark Fibre is justified.

  • Performance: Dark Fibre is economically interesting from 100 Mbps upwards. Very interesting from Gbps upwards. And excellent from 10 Gbps upwards.

Even so, if access to dark fiber remains subject to certain conditions, a large number of companies will be affected.

Internet of Things (IoT)

The IoT large satellite product is a data source that allows companies to access real-time monitoring data. It is particularly important for public authorities. This solution also allows data to be collected from many sources for backhaul type uses.

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