(Lesser underground cabling). Signal degradation is also less in optical fibres compared to coaxial copper cables. From the security perspective as well optical fibres are more dependable. Since they are safe from any kind of electrical or magnetic interference installation engineers have great relief as they do not have worry about the proximity of the cable to other electrical installations. Further, the absence of current implies that there is absolutely no interference between adjacent fibres, which means clear reception of signals. [Bell College]

One aspect to consider however is the difficulty with respect to splicing two ends of an optical fiber. Unlike copper wires that can be simply soldered, joining optical fibres is more complex and requires precision. High cost is also factor to be considered as optical transmitters and receivers are much expensive and further, optical fibres are always at risk for 'fiber fuse', which can destroy the cable....
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