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Optical Fiber Identifier with OFI & VFL (Low Battery Sign)


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Product Description


GAOTek Optical Fiber Identifier with OFI & VFL (Low Battery Sign) is a handheld Optical Fiber Identifier which is designed for optical fiber installation and maintenance. It combines OFI with VFL into one tester. It can not only identify the optical fiber, but also be used as a visual fault locator. The appearance is simple and small.


  • Support to detect optical signals without disrupting traffic; based on non-destructive technology
  • Indicate the signal direction in fiber
  •  Detect a variety of optical tones, 270Hz, 1kHz and 2kHz
  • Suitable for 0.25mm, 0.9mm, 3.0mm fiber, and no need to replace the clamp block, more convenient than others
  • Build in visible fault locator 1mW or 10mW optional
  • Battery low indication
  • Powered by 2 units of 1.5V AA alkaline batteries

Technical Specifications

Wavelength Range 900 to 1700nm (SM)
Recognizable Signal Type CW, 2kHz, 1kHz, 270Hz ±10%
Detector Type InGaAs 2pcs
Fiber Type 0.9, 0.25, 3mm fiber
Sensitivity 1310nm

+10dB to -20dBm (Continuous Wave)

+10dB to -15dBm (Modulated Signal)

Additional Information



User’s manual 1
Calibration certification 1
Optical Fiber Identifier 1
Box 1


1 mw Visual Fault Locator 1
10 mw Visual Fault Locator 1


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