Fiber optic Loopback (cable) patch cord (pigtail, assembly, assemblies, jumper) provides a media of return path for a signal, whether the signal is for testing purposes or due to network restoration. In the case of testing, the loopback signal is used for diagnosing a problem.

Sending a loopback test to a network equipment, one at a time, is a technique for isolating a problem. Its performance is as good as that of a general patchcord. Available type includes FC, SC, ST, LC, MU, MT/RJ, Escon, FDDI.

Applications:
1) Equipment interconnection
2) Device pig-tailling
3) Premise networks
4) Patch panel applications
5) Communications connections
6) LoopBack for network components testing

Features:
1) Compact design
2) Compatible with Fast Ethernet, Fiber Channel, ATM, and Gigabit Ethernet
3) Short wavelength devices