Fiber Optic Loopback Series

BWNFiber fiber optic loopbacks create a passive optical return path for port, transceiver and equipment verification. Compare LC, SC and MPO/MTP® compatible options in singlemode, OM1/OM2, OM3 and OM4 configurations.

InterfacesLC / SC / MPO / MTP® compatible
Request a Quote Browse Products
14 Configurations 100% Optical Testing LC · SC · MPO
Category Products

MPO Loopback Product Range

Selection Guide

Choose the Right Fiber Optic Loopback

A fiber optic loopback returns transmitted optical power to a receive channel inside a compact assembly. It helps equipment manufacturers, data center teams, laboratories and network operators perform supported port checks without building a remote test link.

Product familyAvailable fiber optionsTypical use
LC/UPC duplex loopbackG.657A2 singlemode, OM1/OM2, OM3, OM4SFP-family and LC duplex port testing
SC/UPC duplex loopbackG.657A2 singlemode, OM1/OM2, OM3, OM4Telecom, access-network and SC equipment checks
MPO standard housing loopbackSinglemode, OM3, OM4; 8F/12F/24F optionsParallel-optics and high-density port verification
MPO pull-tab loopbackSinglemode, OM3 and OM4 optionsRepeated access in crowded racks and panels
MPO configuration matters: confirm fiber count, gender, pin configuration, polarity and TX/RX channel mapping against the target equipment before ordering.