For Nigerian deployments, this product should be evaluated as part of the complete network path, including its connectors, mapping and acceptance values. The fiber loopback family closes the optical circuit inside one device: the transmitter launches light, the test module returns it and the receiver must lock onto its own signal, proving the port without a far-end partner.
For Nigerian data center and campus builds, specify attenuated versions when the test plan must prove receiver sensitivity at a realistic link loss calculation rather than at zero loss.
Plan one module per interface type per crew, plus a sealed spare; the cost of an extra module is trivial against a return visit to re-test a suspect port. For Nigerian deployments, retaining this detail with the acceptance records supports consistent maintenance.
LC/SC Loopback Modules
LC UPC Duplex Fiber Loopback Module, OS2Duplex LC UPC loopback for OS2 single-mode transceiver and link testing.
SC UPC Duplex Fiber Loopback Module, OS2Duplex SC UPC loopback for OS2 single-mode port and link testing.
LC UPC Duplex Attenuated Fiber Loopback Module, OS2, 3dBDuplex LC UPC loopback with fixed 3dB attenuation, simulating real link loss on OS2 links.
MTP/MPO Loopback Modules
MTP 8F Male Type 1 Fiber Loopback Module, OS28F MTP male Type 1 loopback for OS2 40/100G SR4-class port testing.
MTP 16F Female Type 1 Fiber Loopback Module, OS216F MTP female Type 1 loopback for OS2 400G DR4-class port testing.
MTP 12F Female Type 1 Fiber Loopback Module, OS212F MTP female Type 1 loopback for OS2 parallel-optics port testing.
MTP 24F Female Type 1 Fiber Loopback Module, OM424F MTP female Type 1 loopback on OM4 multimode for high-radix port testing.
MTP 8F Female Type 1 Fiber Loopback Module, OS28F MTP female Type 1 loopback for OS2 40/100G SR4-class port testing.
MPO 12F Female Type 1 Attenuated Fiber Loopback Module, OS2, 3dB12F MPO female Type 1 loopback with fixed 3dB attenuation for OS2 parallel links.
MTP 12F Male Type 1 Fiber Loopback Module, OS212F MTP male Type 1 loopback for OS2 parallel-optics port testing.
MMC Loopback Modules
MMC 16F Female Type 1 Fiber Loopback Module, OS216F MMC female Type 1 loopback for OS2 MMC-interface transceiver testing.
MMC 24F Female Type 1 Fiber Loopback Module, OS224F MMC female Type 1 loopback for OS2 MMC-interface transceiver testing.
Ordering Information and Support
Each loopback module is optically tested before packing and ships with its dust cap fitted. When requesting a quotation, refer to the test module by connector interface, fiber count, polish and attenuation; for other attenuation data, allocation types or connector combinations, send the test requirement with the enquiry and the factory will establish the manufacturable specification. For Nigerian orders, our team can check the requirement before coordinating manufacture and international delivery.



