Fiber testers provide the precision needed to install, certify, and maintain high-speed optical networks. This category includes OLTS certifiers, OTDRs, optical power meters, light sources, and visual fault locators. Fiber optic cable is a type of cabling that contains one or more optical fibers for transmitting data at high speeds and/or over long distances using light. These fibers are most commonly made of glass and are very thin, typically less than a tenth of the width of a human hair. Designed for singlemode and multimode applications, fiber testing tools help. Fluke Networks has a wide range of Fiber Optic testing products to help certify that power losses are within standards and to troubleshoot broken and high loss links on single-mode and multimode fiber all with ease-of-use, accuracy, and durability. Get pass/fail results in seconds. As the components like fiber, connectors, splices, LED or laser sources, detectors and receivers are being developed, testing confirms their performance specifications and helps. Setting the standard in fiber optic measurement Welcome to the PFO website PFO supplies instruments to test and measure the performance of optical fibers and fiber-optic cables – the backbone of the telecommunications industry. These handheld instruments also troubleshoot issues such as power loss, loose connections, breaks, and other faults in commercial and.