This MTP® loopback module has been developed for testing and checking fiber optic connections in modern high-bandwidth network environments. The product is widely used for measurements in parallel optical networks, including 40G and 100G applications.
The loopback makes it possible to verify MTP® transceivers with a female interface by connecting the transmit and receive paths internally. This allows the operation of 40G PLR4 and 100G PSM4 modules, among others, to be checked quickly and reliably without external cabling.
By connecting directly to MTP® trunk cables or patch cables, this loopback simplifies insertion loss measurements and other network diagnostics, saving time during installation, maintenance, and troubleshooting.
| Fiber type |
MMF |
| Fiber connector |
MTP®/MPOfemale, APC / UPC |
| Return loss |
SM ≥ 50 dB MM ≥ 25 dB |
| Insertion loss MTP |
MM ≤ 1.2 dB SM ≤ 1.5 dB |
| Insertion loss MPO |
MM ≤ 1.0 dB SM ≤ 1.0 dB |
| Sustainability |
500 cycli, IL < 0,5 dB |
| Dimensions |
80 mm × 10 mm |
| Operating temperature |
-40 °C to +75 °C (-40 °F to +167 °F) |
| Coating material |
PEI |
