Can six-core single-mode optical fibers be fused together

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Permanent and stable connections with very low insertion losses can be obtained by fusion splicing. Essentially, the fiber ends are fused together with a heat treatment. Single-mode fused couplers are precision-engineered devices designed for use in single-mode fiber optic systems. This method is typically used for permanent connections, but it allows for disassembly without damaging the fiber ends. The fiber parameters that most affect splice loss in single-mode fiber are mode field diameter (MFD - the diameter of the light-carrying region of the fiber) and core-clad concentricity (the amount tha ould result in a potential splice loss of 0.

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