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Fiber Loopback Module for LC/SC Duplex Single-mode/Multimode

Fiber Loopback Module:LC,SC
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  • LC.SC Fiber Loopback


LC&SC Duplex PVC Single-mode&Multimode Fiber Loopback Module

Fiber Loopback Module is designed to provide a media of return patch for a fiber optic signal. Typically it is used for fiber optic testing applications or network restorations.For the testing applications, the loopback signal is used for diagnosing a problem. Sending a loopback test to network equipment, one at a time, is a technique for isolating a problem.

Fiber Loopback Module is abosolutely an economical solution for a number of fiber optic test applications.

Fiber type Single-mode 9/125 Multimode 62.5/125
Return loss SM≥50dB MM≥20dB
Jacket material PVC 
Fiber connector LC/UPC SC/UPC
Insertion loss SM≤0.3dB MM≤0.3dB
Insert-pull test 500times, IL<0.5dB
Operation temperature -20 to 70°C(-4 to 158°F)

Euipped with SC,LC loopback cable inside,it supports the test of transceivers featuring SC,LC interface

Fiber Loopback Module

Application in Data Center

Fiber optic loopback test is the most convenient way for transceiver maintenance

Fiber Loopback  Application in Data Center 

fiber loopback

Fiber optic loopback modules incorprate two fiber optic connectors and they are plugged into the output and input port of the equipment respectively so that a signal can be sent from a communication device and looped back to the device as a way to troubleshoot a defective node in the network.

Adapters are designed for multimode or singlemode cables. The singlemode adapters offer more precise alignment of the tips of the connectors (ferrules). It is ok to use singlemode adapters to connect multimode cables, but you should not use multimode adapters to connect singlemode cables. This can cause misalignment of the small singlemode fibers and loss of signal strength (attenuation).

When connecting two multimode fibers, you should always make sure they are the same core diameter (50/125 or 62.5/125). A mismatch here will cause attenuation in one direction (where the larger fiber is transmitting light into the smaller fiber). Most adapters are female on both ends, to connect two cables. Some are male-female, which typically plug into a port on a piece of equipment. 

By linking two connectors precisely, fiber optic adapters allow the light sources to be transmitted at most and lower the loss as much as possible. At the same time, fiber optic adapters have the merits of low insertion loss, good interchangeability and reproducibility. Newsun Tech supplies a wide range of mating sleeves and hybrid adapters, including Fiber Loopback Module, Male to Female Fiber Optic Adapter, bare fiber adapter, FC Adapter, ST Adapter, SC Adapter, Quad LC Double deck Optical Adapter, Fiber Optic LC Adapter, and etc.

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