VIAVI FI-10/-11 Optical Fiber Identifiers

The FI-10 and FI-11 Optical Fiber Identifier are rugged, handheld, easy-to-use installation and maintenance instruments that identify optical fibers by detecting the optical signals being transmitted through a single-mode fiber. By utilizing local detection technology (non-destructive macro-bend detection), they eliminate the need to open the fiber at the splice point for identification. This, in turn, eliminates the probability of interrupting service.


  • Operates from 850-1700 nm.
  • Compatible with most AT&T and Corning optical fiber.
  • Uses non-destructive, macro-bending technology.
  • Detection sensitivity of -40 dBm.
  • Bi-directional traffic indication.


  • Live fiber identification.
  • Core power measurement and display on a 2-digit LED display (FI-11).
  • 270 Hz, 1000 Hz, and 2000 Hz modulated tones detection.
  • Relative zero power reading (FI-11).
  • Power loss through a splice or a connector measurement (FI-11).

Key Features

  • High-intensity LED indication of active signal transmission.
  • Interchangeable adapter heads for jacketed, coated or ribbon fiber.
  • Low battery indication.
  • Operates using one hand.

How to Get Started

Interested in a product demonstration? Contact us for more info, receive a price quote, or find out how to buy.


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