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April 1, 2014 at 8:50 am #10012
It is often difficult to experiment on long fiber lengths in a lab setting. Usually a lab will perform the experiment on a shorter length fiber, but loop the signal through multiple times. This is performed using a loop control.
In OptiSystem, the component Loop Control performs this function. You can learn more, by following the tutorial at:
Lesson 3: Optical Systems WDM Design