The ALCOA - FUJIKURA FSM-50S Fusion splicer sets the standard for core alignment fusion splicers. The FSM-50S is the fastest field splicer available, and can complete a splice and tube heat in a total of 44 seconds. The FSM-50S feature automatic core to core, low loss splicing regardless of fiber quality or age. Fiber splicing capability of SM, MM, NZ-DS, DS, attenuation and specialty splicing