Live fiber detector - (-50 to 23 dBm) wo/Core Power Display

Live Fiber Detector


Allows you to detect traffic and measure signals anywhere on singlemode fibers without having to disconnect them. Extended range model (23 to -50dBm) available.


  • No need to open fiber for identification
  • Hands-free operations via Hold button
  • Three interchangeable adapter heads

Includes: LFD-200 carrying case, three interchangeable adapter heads, user guide, 9 V alkaline battery and Certificate of Compliance


Live Fiber Detector Data Sheet [PDF 949KB]

Live Fiber Detector (LFD-200) Specifications:

Optical Characteristics, Typical  
Optical tone receiver 270 Hz, 1 kHz, 2 kHz
Detection technique Non-destructive macrobending
Loss < 0.6 dB at 1310 nm
Spectral response 800 nm to 1650 nm
Minimum fiber slack 1.2 cm (0.5 in) required for detection


Fiber Compatibility  
Fiber compatibility 8 µm to 10 µm core diameter
Coating diamter 250 µm diameter
Coating High refractive index, acrylate


Core Power Detection, Typical  
LFD-201 0 dBm to -40 dBm
LFD-202 0 dBm to -40 dBm
LFD-202E 23 dBm to -50 dBm
LFD-202V 23 dBm to -50 dBm