OFI-FTTx Active ONT Detector for PONs


  • Identifies 1310 nm ONT-OLT upstream signals
  • Visual and audible indicators
  • Rugged, drop-proof construction
  • US Patent 7916983
  • Operates with 2 x 1.5V AA batteries
  • Automatic power down and Low Battery indicator
  • One hand operation


  • Rapid resolution of PON subscriber complaints
  • Confimation of OLT-to-ONT connectivity
  • Identification of unused F2 fibers
  • For use with standard SMF-28 and 15mm bend-insensitive fiber
  • Operates anywhere between the Splitter and Customer Premise



Gyártói oldal - AFL link

The OFI-FTTx is a rugged, handheld optical fiber identifer designed to identify the presence of an active Optical Network Terminal (ONT) on the FTTx F2 fibers at the Fiber Distribution Hub (FDH), the customer drop or anywhere in between. Without removing the F2 fiber from service, the OFI-FTTx can verify that a splitter pigtail at the FDH is connected to an active circuit. The OFI-FTTx can help verify FTTx network records and recover splitter pigtails and F2 fibers that are connected at the FDH but, in fact, are available for new subscribers.

By detecting the 1310 nm signals associated with upstream ONT - OLT communications, the OFI-FTTx can detect the presence of an active ONT. When applied anywhere between the splitter and the ONT, in less than a second, the OFI-FTTx will report that the ONT is "Active" or "Not Detected."

The OFI-FTTx is compatible with 2mm optical cables containing standard SMF-28 fiber as well as 15mm bend-insensitive fibers such as AFL Bend Insensitive or its equivalents. 

The OFI-FTTx is powered by 2 1.5V AA batteries and incorporates automatic power down to optimize battery life. This typically permits it to test 800 fibers before requiring battery replacement.

The OFI-FTTx is covered by US Patent 7916983. 

Benefits of the AFL OFI-FTTx

  • Resolves Customer Service Complaints: Network technicians can avoid truck rolls to customer site by  verifying ONT activity from the FDH
  • Avoids Customer Service Disruptions: Network technicians can positively identify active fibers without fiber disconnection
  • Quickly confirm Service Installation: Installation Technician can verify service installation at customer premise
  • Identifies unused fibers and splitter legs for redeployment to new subscribers
 OFI-FTTx, 2 x AA batteries, User Guide, Soft Case


Prepaid Calibration Plans




2 Year  Cal Plan for OFI-FTTx


2 Year  Cal Plus Plan for OFI-FTTx

For details see the Prepaid Calibrations and Calibration Plus plans product page