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FBT coupler, is an optical splitter that uses the Fused Biconic Taper (FBT) technique. The FBT technique is a well known industry technology for splitting optical power and/or splitting wavelengths. The fused fiber coupler is created through a process of fusing two bare fibers like an “X” and pulling the fused section to achieve the desired optical characteristics. FBT couplers are fused in tree structures to combine optical splitting effects to create power ratio output of 1×N or 2×N, where “N” is the number of desired outputs.

1×2 FBT couplers are used to split light with minimal loss from one into two fibers or to merge light from two fibers into one. 1×N tree FBT couplers and N×N star FBT couplers are made with fuse cascade-connecting N-1 pieces of 1×2 and 2×2 couplers respectively.

A fiber optic coupler is an optical device capable of connecting one or more fiber ends in order to allow the transmission of light waves in multiple paths. The device is capable of combining two or more inputs into a single output and also dividing a single input into two or more outputs. Compared to a splice or connector, the signal can be more attenuated by fiber optic couplers, as the input signal can be divided amongst the output ports.

There are many benefits of using fiber optic couplers. They have low excess loss, high stability, dual operating window, high reliability and low polarization dependent loss. They also have high directivity and low insertion loss.

Many applications make use of fiber optic couplers such as community antenna networks, optical communication systems and fiber-to-home technology.


SKU: 55/50
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