How is the performance of fiber optics typically tested?

The performance of fiber optics is typically tested using specialized tools designed to measure optical signals and detect faults within fiber optic systems. Optical power meters are utilized to measure the power level of an optical signal, which helps in assessing the integrity and performance of the fiber link. OTDRs (Optical Time Domain Reflectometers) are essential for characterizing the fiber and identifying faults, splices, and connectors by sending pulses of light and measuring the time it takes for reflections to return. Visual fault locators are also employed to identify breaks or bends in the fiber by projecting a visible light beam, making it easier to locate issues quickly.

These tools are specifically made for fiber optic technologies, which require different testing methods than electrical systems. Other testing methods like voltage meters, multimeters, or thermal cameras do not provide the necessary insights into optical signal quality and integrity, and therefore are not applicable for diagnosing or measuring performance in fiber optic installations.