Free-Space Optics (FSO)

Point to Point Link Communications

Opening prompt interest

Today’s work environment,

especially multi-site businesses,

require more and more fast link

connection including internet and

available anywhere and anytime.

It is crucial to have the right

technology to ensure proper

transaction operation and information exchange

Definition

Free-Space Optics, in short FSO, is a wireless broadband

technology that uses modulated laser light in the infrared range to

transmit data, voice and video on point to point links.

FSO works on range between 200 meters and 4 KMs in general.

The technology

Free-Space Optics has been on the market for many years and

from its early development, its potential was uncontestable.

But due to adverse atmospheric conditions, FSO was not very

reliable. Meanwhile, recent improvement in its link availability and

relatively cheaper cost is taking FSO to the next level.

Overview of the devices

(from left to right, CableFree and fSona FSO)

Facts

Various wired and wireless technologies (copper wire, Fiber

optics, satellite) provide efficiently connectivity .

In some cases, due to the presence of major roads, natural

obstacles like rivers and mountains the fiber optics cable and other

wired links do not cover all areas.

Free-Space Optics links

Free-Space Optics can be deployed to keep the provided

bandwidth to broadband customers as high as possible at relatively

cheaper cost in specific applications.

FSO and weather conditions

As it is for any other wireless technology, FSO is affected mainly

by fog, then rain and scintillation.

A good wireless link planning can overcome these challenges

efficiently.

FSO applications

“Last mile” connectivity

LAN extension

Backhaul links

Back-up for fiber optics links

Advantages of FSO

High bandwidth beyond 1 Gbps

Unlicensed wireless technology

Rapid installation and easy maintenance

No recurrent fees

Very secure communication technology

Carrier-class availability

Low latency

Legal issues

Free-Space Optics uses unlicensed band of frequencies in the near

infra red. Deployment does not require any license payment but

the product, due to its type, needs to be approved by the ARCT

(Agence de Régulation et de Contrôle des Télécommunications au

Burundi).

Environmental issues

FSO presents no danger on the environment, but rather presents

advantages. FSO is also called fiber through air due to the

resemblance and high bandwidth capabilities up to 10 Gbps.

Safety use of equipments

Laser eye safety standards set in different classes are used to

prevent any harm to the user of Free-Space Optics.

FSO Cost

Based on CableFree equipments, FSO cost can vary from around

USD 6,300 for 100 Mbps, 200 meters link to USD 27,000 for a 1

Gbps, 2 KMs link.

FSO test at Hope University

FSO test at Hope University (2)

FSO test at Hope University (3)

Thank you!