Multimode fibers can be harder to fusion splice as the larger core with many layers of glass that produces the graded-index profile are sometimes harder to match up, especially with fibers of different types or manufacturers. Splicing is required to create a continuous path for light transmission from one fiber to another. Two different methods exist for splicing fibers: Typical splice loss values (the measure of loss in optical power across the splice point) are usually lower for fusion splices (typically less than 0. In daily field work, fusion splicing does not always go exactly as planned. Very often, these issues are not caused by faulty equipment, but by small gaps in technical understanding or by the. Mechanical splicing means that two fiber ends are tightly held together with some mechanical means. In general, there are two main situations: Each case has its own challenges and solutions, which we'll explain below.
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