Optical Time-Domain Reflectometer (OTDR)

An Optical Time-Domain Reflectometer (OTDR) is a device used to test and analyze optical fibers. It sends a pulse of light into a fiber cable and measures the light that reflects back. By analyzing these reflections, the OTDR can identify faults, bends, or breaks in the cable, and determine the overall quality of the fiber. This technology is essential for ensuring reliable performance in communication networks, as it helps technicians locate problems quickly without needing to access the entire length of the fiber.