Fiber splicing is the method of permanently joining two fibers together. Unlike fiber connectors, which are designed for easy reconfiguration on cross-connect or patch panels.
Mechanical splicing doesn’t physically fuse two optical fibers together, rather two fibers are held butt-to-butt in a sleeve with a few mechanical mechanism. You will definately get worse insertion loss and back reflection in fibers in metal tube production line than in fusion splices (the second type we are introducing below). Mechanical splicing is generally used for emergency repairs and fiber testing. You can check out some mechanical splice products here.
Another type splicing is named fusion splicing. In fusion splicing, two fibers are actually welded (fused) together by an electrical arc. Fusion splicing is regarded as the commonly used approach to splicing as it offers the lowest insertion loss and virtually no back reflection. Fusion splicing supplies the most trustworthy joint between two fibers. Fusion splicing is done by an automated machine called fusion splicer (fusion splicing machines). We shall center on fusion splicers with this tutorial.
Since we said above, fusion splicer may be the machine utilized to weld (fuse) two optical fibers together. This process is referred to as fusion splicing. The fiber ends are prepared, cleaved, and placed into alignment fixtures around the fusion splicer. On the press of the mouse, the fiber ends are heated with electrodes, brought together, and fused.
Fusion splicers are automatic machines you need to either choose factory recommended settings or perhaps you set the splicing parameters yourself. There are actually five steps to fusion splicing having a splicing machine.
There are numerous types of fusion splicing machines available, varying in features and capability, and price. So you must do your homework before making a decision. These section describes different fiber alignment technologies in several kinds of fusion splicers.
Optical fiber core alignment (also called “profile alignment”) FTTH cable production line use multiple cameras to inspect both the cleaved fibers before fusing and let for multiple axis movement in the fibers. Both fibers are illuminated from two directions, 90 degrees apart. In the multiple video cameras, the device recognizes the core from the fibers and aligns them automatically using movable stages.
Core alignment splicers are high-end units allow users to keep separate programs or recipes where factors like splice time as well as temperature could be highly customized. Such high end fusion splicers magnify and visually display the splice, and make use of active core-alignment to align the fibers. Light injection technology and imaging software align the fiber cores so maximum light passes in one fiber towards the other, ensuring minimal splice loss.
This provides for precise fiber alignment, producing a typical splice loss of only .02dB. This degree of precision is required for many single mode fiber applications and also enhances performance of multimode fiber. Ribbon splicers typically use core alignment.
Core alignment fusion splicers have always been the most preferred method for CATV installations, backbone networks, specialty fiber applications, and optical components manufacturing largely szzstrand with their high accuracy and reliability. The subsequent picture shows a AFL FSM-60S core alignment fusion splicer.
More Sheathing line employ clad alignments to line up the fibers for splicing. The fibers sit in a holder or V-groove and they are lined up “physically”, in accordance with the outer diameter of the fiber’s cladding. These splicing units are at the mercy of the fibers’ glass geometry characteristics and tolerances (Clad Diameter, Clad Non-Circularity, and Core-to-Clad Concentricity). Just because the outer diameters are aligned, doesn’t mean the cores will likely be perfectly aligned. Such units typically produce higher loss splices and lack the features and adaptability of higher end splicers.
Clad alignment splicers have multiple cameras only permit single axis movement of your fiber. Alignment is aided with a fixed v-groove. The common loss for this kind of splice is .05dB. Clad alignment splicers would be best suited for multimode applications. These picture shows a AFL FSM-16S cladding alignment splicing machine.