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LFD-200 - live fiber detector

Allows you to detect traffic and measure signals anywhere on singlemode fibers without having to disconnect them.

Spec sheet (PDF) User manual (PDF)

Measure signals anywhere on a fiber

The LFD-200 detects traffic and measures signals anywhere on a fiber, using a safe, reliable macrobending technique that does not disrupt traffic, nor damage or overstress the fiber.

Key features

  • No need to open fiber for identification
  • Hands-free operation via Hold button
  • Three interchangeable adapter heads
  • Extended range model: 23 to –50 dBm


  • Non-intrusive fiber identification
  • Traffic direction verification


No-disconnection live fiber detection

The LFD-200 Live Fiber Detector allows you to detect traffic and measure signals anywhere on singlemode fibers without having to disconnect them. It also lets you check for signal presence before rerouting or maintenance, perform continuity tests and verify cable labeling. Based on non-destructive macrobending technology, the LFD-200 doesn’t disrupt traffic, damage or overstress the fiber, enabling efficient, accurate and reliable data acquisition.

Simple testing of multiple fiber types

EXFO’s LFD-200 is the only instrument of its kind on the market that comes with a choice of three built-in, interchangeable adapter heads, making it an all-in-one solution for live fiber detection. The handle’s storage compartment holds the extra adapter heads for simple conversion and easy testing of various fiber types.

The LFD-200 also features a unique Hold button that enables hands-free operation. Just push up the button and click it down.You are now free to operate your setup.

LFD-200 - live fiber detector

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Awards and reviews

Innovation and leadership have always been front and center at EXFO. Each year, we strive to develop solutions that will ensure superior customer experience in smarter, modern networks. Being recognized as such is always a great honor. Learn more about our awards:

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