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Jfopt Location: Jfopt > News > Fiber knowledge > What is lookback fiber cables?

What is lookback fiber cables?

Edit: Fiber cable manufacturer   Date: 2019-01-12

Traditional fiber optic loopbacks can be regarded to be the two connectors on the same piece of simplex fiber optic patch cable put together, thus it forms a loop. fiber optic loop backs are used in fiber optic test applications. The two most commonly used fiber optic loopbacks are SC type and LC type, while there are also ST, FC, and MTRJ, FDDI etc types.

Just like fiber optic patch cable assemblies, fiber optic loopbacks are classified by single mode type and multimode type. Typically single mode SC type and LC type fiber optic loopbacks are blue color, typical multimode LC and SC type fiber loop backs are beige color, this also goes with the practice of fiber optic patch cables. Loopback fiber core can be 9/125 single mode or 50/125 multimode, or 62.5/125 multimode.

We supply various kinds of single mode fiber optic loopback cable and multimode fiber optic loopback cables, these products are with different connectors including ST, FC, SC, LC, MU, MTRJ, etc. fiber optic loop back cables offer a generous yet manageable fiber loop virtually eliminating bend loss. They are usually used in fiber optic testing applications.

Our fiber optic loopback products are two styles, one is the common type which is with visible cable parts on the body, and the other is a loopback plug connector. The loopback plug is more compact and it has most of its parts inside the shield body for protection. Both of these 2 types fiber optic loopbacks are good optical performance and competitive prices. Optical fiber used on the loopback can be 9/125 SMF, 50/125 MMF or 62.5/125 MMF.

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