12 Fibers MPO Singlemode Fiber Optic Loopback Module for 40/100G Network Testing

12F MPO SM Fiber Optic Loopback Module/Cable

The MPO loopback contains MPO back ring jumpers in the LOOPBACK configuration, connecting both ends of the fiber into an MPO connector to create a continuous light path within the same connector. This enables testing of device launch capacity and receiving sensitivity, particularly in 40/100G network communications. By returning signals, it helps locate various potential issues and facilitates effective testing and evaluation of individual components or interfaces on fiber optic networks.

Optical fiber loopbacks are available in multiple configurations to accommodate 8-core, 12-core, and 24-core MPO connectors with various fiber configurations to adapt to different test port requirements. The 12F MPO Fiber Loopback Module specifically allows verification and testing of transceivers featuring MPO interfaces for 40GBASE-SR4 QSFP+ or 100GBASE-SR4 devices.

MPO Loopback modules provide looped signals to test transmit and receiving functions. They are widely used within testing environments, especially in parallel optics 40G and 100G networks. Loopbacks are designed to link Transceiver (TX) and Receiver (RX) positions of MPO transceiver interfaces. MPO loopbacks facilitate and accelerate insertion loss (IL) testing of optical network segments by connecting them to MPO trunks and patch leads.

OMC offers a comprehensive line of MPO fiber optic loopback assemblies for burn-in and testing of MPO network components and systems. These MPO Loopback Assemblies effectively test transmitter capability and receiver sensitivity of network equipment, meeting telecom and datacom requirements. They are packaged in compact housings for maximum density in these applications.

MPO Singlemode Reference: IEC 61754-7
MPO Singlemode Housing Details: SM APC: Green connectors + black boot (Standard Loss MPO)
SM APC: Yellow connectors + black boot (Super Low Loss MPO)

MPO Multimode Reference: IEC 61754-7
MPO Multimode Housing Details:
OM1 & OM2 PC: Beige connectors + black boot (Standard Loss MPO)
OM3 & OM4 PC: Aqua connectors + black boot (Standard & Super Low Loss MPO)
OM3 & OM4 PC: Heather Violet connectors + black boot (Standard Loss MPO)

A loopback test involves sending a signal from a communication device and looping it back to the same device to determine proper functionality or troubleshoot defective network nodes. For fiber optic loopback testing, optical loopbacks verify the operational reliability of devices. Using fiber optic loopback cables or modules for data transmission, the signal emitted by the device is looped from the transmit (Tx) end of an active component back to the receive (Rx) end of the same component.

Fiber optic loopback testing is commonly employed for checking fiber optic transceivers. Since transceivers have two ports for receiving and transmitting light signals, it's essential to test these ports to verify proper operation. Fiber optic loopback testing provides the most convenient method for transceiver maintenance. The testing process routes the laser signal from the transmitter port back to the receiver port. The transmitted pattern is then compared with the received pattern to ensure they are identical and error-free.

Selecting the appropriate loopback for a fiber optic transceiver requires understanding the interface type, polish type, and cable type of the transceiver. Below is a summarized selection guide for commonly used transceivers.

This guide discusses specific fiber loopback choices for the most commonly used fiber optic transceivers. For transceiver modules not mentioned here, you can determine the appropriate loopback by identifying details about its interface type, physical contact, and cable type.

These fiber optic cables come in easily handled, well-protected packaging labeled and marked by OMC as standard. Standard carton sizes include 34×22×15 cm, 44×34×24 cm, and 54×39×34 cm. The specific carton used depends on the quantity of goods. Custom packaging is available.