Fiber splicing is a fiber-to-fiber connection, meaning joining the ends of two fiber strands together. 

The two methods of fiber splicing are fusion splicing and mechanical splicing, with fusion splicing being the most common method used for fiber optic splicing.

In the fusion splicing process, a specialized fusion splicer machine is used to precisely align the two fiber ends. Then, the glass ends are “fused” together using an electric arc. Subsequently, the fusion splicer’s heater is utilized to shrink the splice protection sleeve.

After splicing, the two fibers are contiguous, forming a transparent continuous connection and optical path between the fibers.

Fiber optic installers perform civil engineering works, fiber optic cable laying, set-up of cabinets and “wall boxes” or termination enclosures, fiber splicing, vertical (riser) and horizontal (floor) cabling, as well as jointing and testing of laid fiber optic cable components.