Wednesday, 30 October 2019

What is dark fiber?

It is increasingly common to hear about dark fiber when addressing interconnection solutions for sites with high bandwidth demands, but what is this about dark fiber?

Dark fiber is called fiber optic lines, which at the time made someone (usually operators or gr) and for whatever reason they are not in use, so they receive the nickname of "dark", because they are not illuminated ( In use).

Is it weird to find dark fiber?

Depending on the geographical location, it will be easy to impossible to find and this is due to the fact that tending fiber is very expensive (wiring, permits, works, etc.), so it will only be done in places with a high demand width band since the most expensive part is not the cable, so it is usual to install more fiber than initially necessary, so if we are in an area of ​​high population density or with large bandwidth consumers (technology parks, datacenters, etc.), it is possible that there is the possibility of renting or buying one of these fibers.

Its cheap?

No, it is quite expensive.

So what is it used for?

To connect sites with high demand for bandwidth, or that meet requirements for latency, privacy, etc. that make other alternatives not viable. A clear example could be the interconnection of the main Datacenter of a bank with the backup one.