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Fiber foundation done right with OTDR testing

For fiber characterization, the testing equipment will need to measure/find the following key parameters:




  • Insertion loss (IL): The loss of signal power expressed in decibels (dB) that results from the presence of an event on a fiber link, such as a splice or a connector. It represents a ratio of the power that comes out of the link over the power that goes in.

  • Optical return loss (ORL): The loss of signal power resulting from the reflection caused at a discontinuity in an optical fiber. It represents a ratio of the power that is reflected over the power that goes in.

  • Optical link length: The distance between the first network connector and the end of a fiber link, including the different events (connectors, fusion splices, macrobends, etc.). Fiber length can be from point-to-point or can be measure going through a splitter all the way to the ONT, depending on the measuring devices used.

  • Fiber-based faults: Any event on an optical link that doesn’t meet the required thresholds to achieve a pass diagnostic for a particular measurement.


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