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Optical Fiber Identifier

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Optical Fiber Identifier OFI-300

Metal Live Fiber Identifier OFI-300 is designed with 3 adapters for 0.25, 0.9, 2.0, 3.0mm fiber. It can help you to test the fiber signal direction with signal and indicate the live or dark fiber when testing.

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Fast find fiber in a mass

Indicate signal directions in fiber

Indicate Live or dark fiber

Detect 270Hz, 1kHz, 2kHz from laser source     

Adapter for 0.25, 0.9, 2.0, 3.0mm fiber

One-year warranty and Three-year recommended calibration interval

Wavelength Range800 to 1700nm (SM)
Recognizable signal type*CW, 2kHz, 1kHz, 270Hz ±5%
Detector TypeInGaAs 2pcs
Fiber Type0.9, 0.25, 2.0, 3.0 mm fiber
Sensitivity+10 ~ -50dBm
Accuracy *+10dB to -30 dBm (Continuous Wave) /+10dB to -25 dBm (Modulated Signal)
Signal DisplaySignal direction; signal frequency (2kHz/1kHz/270Hz); low battery
Power SupplyNo                1mW                   10mW              +6~-70dBm  +26~-50dBm
VFL Connector2.5mm universal connector
Power Supply9V battery

* at 20±3℃, indoor, 1550nm wavelength, 0.9mm fiber, with white coat, 270Hz, error < 5%,

* 0.25, 2.0, 3.0mm fiber, the performance at continuous wave will be lower

* 1KHz, 2KHz, the performance at modulated signal will be lower

* at 1310nm wavelength, the performance will be lower

Size(H*W*D)200mm * 30mm * 27mm
WeightAbout 200g
Storage Temperature-20 -- +60°C, < 90%RH
Operating Temperature-10 -- +50°C, < 90%RH

Carrying bag


Calibration certificate




0.25, 0.9, 2.0, 3.0 adapter


Packing box


Shade Cap

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