What is the primary purpose of using an OTDR?

The primary purpose of using an Optical Time-Domain Reflectometer (OTDR) is to identify faults in fiber optic cables. OTDRs are specialized testing devices that send pulses of light into a fiber optic cable and analyze the light that is reflected back. This reflection occurs due to various factors such as connectors, splices, bends, and other imperfections along the fiber. By interpreting the data collected, a technician can pinpoint the location of faults, measure loss, and assess the overall integrity of the fiber optic link. This tool is crucial for maintenance and troubleshooting in fiber optic networks, ensuring that any issues are quickly and accurately identified and resolved.

Other options, while related to fiber optic technology, do not encapsulate the primary purpose of an OTDR. Measuring optical power involves different types of equipment, such as optical power meters, and testing broadband connections typically refers to different tools designed for electronic signals rather than light signals in fiber. Splicing fibers together is a specific task in fiber installation rather than a function of an OTDR itself.