Leading North America Supplier - 20 Years of Innovation - Shipping Globally

Visual Fault Locators

Visual Fault Locators (VFLs) are commonly used to locate the damaged optical fiber cables or to inspect patchcords, ribbons or bunched pigtails. GAOTek offers a broad range of Visual Fault Locators (VFLs) which technicians can diagnose, troubleshoot and fix the problem areas in fiber cables quickly and efficiently for sale to the United States, Canada and Globally.

GAOTek’s VFLs are designed to find sharp curves, breaks or damages in fibers, lead end-to-end continuity tests, execute fiber tracing and identification in an optical network and can even find defects in OTDR dead zones. Our Visual Fault Locators are both rugged and portable are even available in a compact pen shape.

Our VFLs are designed for flexibility, accuracy and productivity and are manufactured using advanced technology and adhere to international standards and offer an outstanding cost-benefit ratio.

To learn more about this product please click below or call us today to speak with one of our experts to answer any questions.

Functions of Visual Fault Locators

Fiber Optic Visual Fault Locators emit a bright red visible laser beam that further transmits constant light to the other end of the fiber. Users can visually identify fibers within multi-fiber cable bundles during installation or faults over specific distances because they have control buttons which allow technicians to choose between constant or flashing light. This flash mode also enhances the visibility to detect faults. These devices can localize sharp curves, breaks or damages in fibers, lead end-to-end continuity tests, execute fiber tracing and identification. Also, the quality of the connector can be checked by using Visual Fault Locators.


GAOTek’s Visual Fault Locators are exclusively created to be convenient, and light in order to be easily portable. These devices have visible laser lights and highly-powered lasers that can measure clear distance for single-mode and multi-mode connectors with precision. Besides, these devices also have universal adapters which fit all other typical optical connectors, for example, SC, ST, and FC. They are effective to run with all types of patch cords, ribbons or bunched pigtails in the installation and maintenance of fiber optic systems. These tools use special laser driver circuits which can guarantee stable power output and can localize breaks in small patch cords. OTDRs cannot identify these problems because of their operating dead zone.

Applications and Industries

Optical networks comprising of LAN, FDDI, and ATM are greatly assisted by Optical Visual Fault Locators in order to have a high level of maintenance of the fiber optic systems. Test labs of optical fibers and telecommunication networks mainly use these devices. Also, they are used in CATV systems to trace fiber loss testing, optical examination and fault locating for both single mode and multimode optical fibers.

    Showing all 8 results