What is the purpose of an optical power meter in fiber optic testing?

The purpose of an optical power meter in fiber optic testing is to measure the power loss in a fiber optic link. This device quantifies the amount of light power that is transmitted through the fiber and can determine how much signal loss occurs over the length of the link. Measuring this loss is critical for assessing the performance of the fiber optic system, ensuring that the signal strength is within acceptable limits for proper operation. By determining power loss, technicians can identify potential issues, such as improper connections, excessive bending, or faults in the fiber itself, which could impact the effectiveness of the communication system.

In contrast, amplifying the light signal is the function of an optical amplifier, not a power meter. Detecting the type of fiber being used typically involves visual inspection or specific identification tools rather than a power meter. A light source is used for introducing light into the fiber for testing but does not measure power loss itself, which is the primary capability of an optical power meter.