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Investigation and testing of a low-cost long fiber optic link without external electric power
KTH, School of Information and Communication Technology (ICT).
2012 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In environments with underdeveloped transport network infrastructure, such as many African countries, the issue of connecting distant yet scarce cities with high-speed links is an important question. One of the central aspects of the problem is the fact that optical fiber links require amplification in the middle, which cannot be provided easily as power infrastructure is very hard to implement in locations such as deserts. Therefore, a solution including inexpensive and widely available components to power the amplifiers is required.

This Master Thesis presents a project of a system providing power for optical signal amplifiers through an alternative energy source, taking advantage of the fact that the insolation is high throughout Africa. The system also incorporates remote control over the amplifiers via SMS.

We have been able to set up and test a working 320 km long link at a speed of 1 Gbps using one amplifier, as well as a working 125 km link at a speed of 10 Gbps, using one amplifier as well. The result of the work is providing African network designers with an instrument to extend many optical fiber links, as well as giving them a reference on how far the links may reach having different bandwidths.

Place, publisher, year, edition, pages
2012. , 63 p.
Trita-ICT-EX, 2012:73
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-98677OAI: diva2:538463
Subject / course
Communications Systems
Available from: 2012-07-02 Created: 2012-06-29 Last updated: 2012-07-02Bibliographically approved

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