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Visual Fault Locators
Optical Wavelength Laboratories (OWL)
OWL fiber optic visual fault locators (VFL) are specially designed to couple a maximum of optical energy into
multimode and singlemode optical fibers by using a bright red fiber optic laser. Breaks, microbends, and other anomalies in optical fibers and connectors cause the intense bright red laser light to escape, thus revealing the presence of a fault. In addition to visual fault location, OWL VFLs can be used as a visual optical fiber identifier. A visual fiber optic identifier eliminates much of the guesswork during testing by identifying the fiber under test.