The ARC Fusion Splicer is a device used to join optical fibers together in a process called fiber splicing. It uses an electric arc to precisely fuse the ends of glass optical fibers together to form a low loss, permanent connection. The splicer aligns the fibers using cameras and V-grooves and then generates an electric arc to melt the fiber ends together, creating a nearly imperceptible joint between the two fibers with losses typically less than 0.1 dB.