In optical measurement technology, different measurement devices are used to test optical fibers. In addition to analyzers and power measurement devices, optical sources that can be readout with the help of monitors are also used.
To identify a special fiber, bending couplers ae used to determine the correct fiber, especially in the installation, maintenance, or replacement of fibers.
The state, throughput, and identification of an optical fiber can be easily checked with fiber testers by coupling highly visible laser light into the optical fiber.