What type of testing is commonly performed on optical fibers after installation?

OTDR testing, or Optical Time-Domain Reflectometry testing, is commonly performed on optical fibers after installation to assess the overall integrity and performance of the fiber optic link. This method involves sending a pulse of light into the fiber and measuring the time it takes for the light to reflect back from various points within the fiber. By analyzing these reflections, technicians can identify issues such as breaks, bends, and connectors that may impact performance, as well as measure the overall length of the fiber and attenuation rates.

OTDR testing is critical because it provides a comprehensive analysis that helps ensure the optical fibers will perform to specifications before the system is put into operation. This proactive step is essential for maintaining network reliability and minimizing future troubleshooting needs. The tool is specifically designed to work with optical signals, making it the most appropriate testing method for fiber optic systems.