Optical Fiber Identifier (AOFI3)

AOFI3 Rev.00, Date 2018-06-21

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AOFI3 Optical Fiber Identifier is a low cost, portable instrument designed to detect optical signals without disrupting traffic. Based on non­destructive macrobending technology, the AOFI3 doesn’t disrupt traffic, damage or overstress the fiber, enabling efficient, accurate and reliable data acquisition. During maintenance, installations, rerouting or restorations, it’s often necessary to isolate a specific fiber. By simply clamping the AOFI3 onto a fiber, the OFI-3 will indicate if there is a signal, a modulated signal, or traffic and show signal direction.



  • “One button meter”, convenient and easy to use
  • Detect a variety of optical tones, 270Hz, 1kHz and 2kHz
  • Powered by 2 units of l.5V AA alkaline batteries
  • RB0.25mm,RB0.9mm,RB3.0mm plungers available
  • Transmission direction indication
  • Intensity display of optical signal
  • Low battery indication
  • Buzz indication function



Technical specifications

Recognizable Wavelength Range900 to 1650nm
Recognizable Signal Type Detector Type CW, 2kHz, 1kHz, 270Hz ±5%
Detector typeInGaAs 2pc
Clamp typeH0.9/0.25 for bare fibers; H3.0 for jacketed fiber
Sensitivity @1310nm+11dB to-20 dBm (Continuous Wave);
+11dBto -10 dBm (Modulated Signal)
Sensitivity @1550nm+11dB to -30 dBm (Continuous Wave);
+11dB to -18 dBm (Modulated Signal)
LED IndicaltorSignal traffic;signal frequency (2kHz/lkHz/270Hz);
Signal intensity (5 grades); low battery.
Operating Temperature -10 to +S0°C
Storage Temperature -20 to + 70°C
Power Supply1.5V AA batteries*2pcs
Dimension (mm)202L*62W*36H
Weight (g)300
Standard accessories2*batteries, 3*adapter heads (RB0.25mm, RB0.9mm and RB3.0mm), carrying bag, user manual, test report
Optional accessoriessun shield, RB2.0mm adapter head


Ordering and delivery information

Optical Fiber IdentifierAOFI3carton box (1 pc)





Extended System Warranty

The APS System Warranty assures the compliance of the system performance to the applicable class of cabling for a period of 25 years. The warranty may be applied for by an accredited APS Partner who has designed and/or installed the entire system.



Every effort has been put so that this document is most reliable and free from errors. However, AP Solutions Oy cannot be considered responsible for any mistake in this document and users should consult AP Solutions Oy for any information needed. AP Solutions Oy reserves the right to make changes to the documents at any time, without prior notice.
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