8/12/24-Fiber MTO/MPO Lookback Module
MTP loopback modules are used widely within testing environment especially within parallel optics 40G networks. Devices allow verification and testing of transceivers featuring MTP interface – 40GBASE-SR4/CSR4 QSFP+ devices. Loopbacks are built to link Transmitter (TX) and Receivers (RX) positions of MTP transceivers interfaces. MTP loopbacks can facilitate and speed up IL testing of optical networks segments by connecting them to MTP trunks/patch leads.
Product Details
| Fiber Type | SM/MM | Fiber connrctor | MTP/MPO |
| Return loss | SM>50dB,MM>35dB | Insertion loss | <1.0dB |
| Insert-pull test | 50times, IL<0.5dB | Size | 80mm*10mm |
| Operation temperature | -40 to 75°C (-40 to 167°F) | HTS-Harmonized Code | 8517709000 |
Overview
The Signamax Optical Fiber Loopback Modules are designed to test and troubleshoot active network equipment. The loopback module is compact yet effective in determining the continuity of a signal from one end to the other. Offered in both LC, SC, and SM, these little gadgets comply with fast Ethernet, fiber channel, and gigabit Ethernet to fit with a multitude of installations. Optical fiber installments require careful and meticulous handling thus making the loopback module an essential piece to the tool box to establish the source of any issues in the field quickly.

Key Features
- ● Designed to troubleshoot active network equipment
- ● Durable for up to 500 mating cycles
- ● Insertion loss of 0.35 dB MM / 0.20 dB SM
- ● Return loss of only -30 dB
Application
● Telecom and datacom port provisioning
● Telecom and datacom testing and troubleshooting
Product Details

| Standard Connector MTP loopback connector adopts 8/12/24 fibers with different types of polarity. | ![]() |
![]() | Upgrade Design The fiber loopback is slim and takes up less space than tranditional fiber loopback. |
| Dustproof Function Every loopback module is equipped with a dust cap, which is convenient to protect it from pollution. | ![]() |
FOCC provides type 1 polarity loopback modules as default for your networks.
And please note that 8/12 fibers MTP is for 40G QSFP+/100G QSFP28, 24 fibers is for 100G CFP/CXP.

Polarity Type




