In network applications, it has superior transmission quality and is generally easier to install and maintain. Mike Shulim, director of engineering for DST Controls, a system integrator in California, placed noise immunity at the top of his list of reasons to consider fibre optics in a control network situation. Additionally, fibreoptic networks have no life, Mr. Shulim commented. Copper-based systems degrade with age. After 10 to 15 years speed of transmission drops and internally generated noise increases.
Fibreoptic systems have an effective life three times that of copper.
Definitely a long-term solution. Mr. Shulim points out that use of optical fibres in control installations, especially retrofits and system expansions, is cost comparable to running copper conductors. Users can run fibreoptic cables in the same conduit and trays as existing power cables with no noise concerns and save on installation time and cost. However, technicians must pay close attention to detail. Overstretching cable and poor termination can prove disastrous.