Connect your fiber optic flashlight to one end of a strand of fiber (with most fiber optic flashlights, you must terminate the fiber). Take a look at the opposite end. In this article, you will learn how to use optical time-domain reflectometry, visual fault locators, and continuity testing to identify and fix the broken. If a fiber link isn't functioning, the first step is to check for continuity. One of the easiest ways to check for continuity is to use a visual fault locator (VFL). No light visible at the end of the link typically. An optical fiber connector is used to join optical fibers where a connect/disconnect capability is required. The fiber connector types, sometimes referred to as terminations, link fiber optic cables together through terminals, switches, adapters, and patch panels, by bridging the gap between their. We terminate fiber optic cable two ways - with connectors that can mate two fibers to create a temporary joint and/or connect the fiber to a piece of network gear or with splices which create a permanent joint between the two fibers. Common Indicators of a Cable Break Signal Loss or Interruption: If data transmission is interrupted, it could indicate a break or severe bend.