Ensuring system connection quality, minimizing failure factors, and locating fiber fault points during malfunctions
Fiber optic testing is a technique used to evaluate the performance of single-mode and multi-mode fiber optic systems. It aims to ensure fiber connection quality, reduce potential failures, and rapidly pinpoint fault locations. Its core objectives include verifying link reliability and quantifying signal transmission loss.
Testing is categorized into manual simplified measurements and precision instrument measurements, with signal attenuation as the core metric. Multimode fiber requires attenuation testing at 850nm or 1300nm wavelengths, while single-mode fiber demands higher precision. Test items cover connectivity, end-to-end attenuation, and connector loss evaluation. Horizontal subsystems typically undergo single-wavelength testing, whereas backbone systems require dual-wavelength testing. Following TIA/EIA standards, instruments like the FTK200 are used for testing. Total link attenuation is calculated by summing fiber cable loss and connector loss.