Noyes OFI-FTTx Acive ONT Detector

The new OFI is unique in that during testing, the F2 fiber does not have to be removed from service. Therefore, the OFI-FTTx can verify whether a splitter port at the FDH is connected to an active circuit before it is disconnected for fault location or re-use. The OFI-FTTx can also help verify FTTx network records, and recover splitter ports and F2 fibers that are connected at the FDH but in fact available for new customers. When applied to a splitter pigtail at the FDH, the OFI-FTTx will report that the ONT is either “active” or “not detected,” typically within three seconds.

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  • Identifies 1310 nm ONT-OLT upstream signals
  • Visual and audible indicators
  • Rugged, drop-proof construction
  • US Patent 7916983
  • Operates with 2 x 1.5 V 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 15 mm bend-insensitive fiber
  • Operates anywhere between the Splitter and Customer Premise

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 2 mm 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 1.5 V AA batteries and incorporates automatic power down to optimize battery life. This typically permits it to test 800 fibers before requiring battery replacement.

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