An important tool for all fiber technicians, the FI-100 Fiber Identifier detects the presence of signals on optical fibers. With the FI-100, technicians are able to trace fibers from end to end, verifying that live fibers are not disconnected. This also allows the technician to quickly determine the approximate core power and signal direction in a fiber optic cable without disconnecting the fiber.

The fiber identifier creates a non-intrusive macro bend so that only a small insertion loss is created, thus the technician can probe fibers without causing an alarm condition. The FI-100 uses tone detect technology so that the technician can trace signals without disconnecting fibers with potentially critical services.