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I'd like to know what is meant by fiber characterization and why I might need itWhy do I need fiber characterization?As telecoms systems and dark fiber contracts become more complex, the actual performance of the installed fiber link becomes critical.When a “dark fiber” deal is done it may be some time since the installation was originally carried out and so it is necessary to verify that the performance has not degraded, due to bends or dirty connectors for example, since the fiber was installed. A dark fiber contract may run for many years, so it is important that the fiber should support the requirements of future systems as well as today’s systems.Comprehensive fiber characterization can take the uncertainty out of purchasing dark fiber, so that systems can be deployed with confidence.This is why fiber characterization has become so essential. Based on the results of the fiber characterization exercise, decisions will need to be made about equipment choices, whether remedial works are required, or even whether to accept or reject the fibers. Often, the systems supplier will also use the characterization data to help configure their equipment for optimal performance and/or cost. For example, chromatic dispersion parameters allow the correct amount of dispersion compensation to be applied, while loss measurements may indicate that it’s possible to use lower-power and lower-cost optical transceiver modules. |
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