High reflectance refers to the amount of light reflected into the fibre instead of travelling along the intended path. It's usually measured in decibels (dB), and when you see high numbers, it indicates a significant problem in the fibre optic network. It is also called. Optical return loss for individual events, i. the reflection above the fiber backscatter level, relative to the source pulse, is called reflectance. Optical return loss is given in units of dB and always a negative value for passive optics, with values closer to 0 representing larger reflections. Impact on Network Performance: High reflectance indicates potential issues such as poor connections or contamination, which can degrade signal quality. Poor ORL is commonly caused by dirty connectors, poor splices, mismatched connector types, or damaged fibers.
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