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Tight Buffer Fiber
Tight buffer fiber optic cable is used mainly in indoor applications. Here the buffer is the first layer of protection surrounding the optical fiber, the bare fiber is put into this buffer tube. A tight buffer fiber optic cable means the optical fiber’s coating diameter is same as the buffer tube’s inner diameter.

A major advantage of tight buffer fiber optic cable is its ability to keep cable working despite a possible break in the fiber. Since the buffer tube holds the fiber firmly, a small separation of fiber ends will not interrupt the service completely, but certainly in such cases the signal quality will be affected. Another advantage of tight buffer is that because each buffer tube holds only one fiber, when you want to terminate the fiber with connectors that will be easy.