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How does the fusion splicer align the fibers

Passive Alignment


The splicer uses V-shaped groove to hold the fibers in place along the X and Y axes. The only movement of the fibers is along the Z axis as the splicer brings the fibers together. This process relies heavily on precisely-shaped V-grooves and very clean fiber. Chipped V-grooves or dirty fibers can affect the X or Y alignment to the point that the splicer cannot perform a good splice on them. Passive alignment only allows cladding alignment because the fibers cannot be moved to align the cores.


Active Alignment


Active alignment aligns on all 3 axes. The Mechanical Splicer still uses a V-groove to hold the fibers in place, but in active alignment it can actually move the V-groove area along the X, Y, and Z axes to bring the fibers into alignment with each other. This 3-axis alignment allows for core alignment instead of just aligning the fibers based on their outside geometry. Due to the expensive electronics and motors required to handle this type of precision movement, this process is only found on high-end machines.


Recommended products:


Mechanical Splicer


Recommended reading:


What is fiber fusion splicing

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