The cable structure is that the fiber is placed in the middle of two parallel reinforcing members and then extruded with a flame retardant polyolefin sheath (LSZH) or a polyvinyl chloride (PVC) sheath; the number of cores can be 1 core, 2 cores, 4 cores. Application scenario: FTTH, indoor Note: Non-metallic reinforcements can be FRP, KFRP (aramid reinforced FRP), GFRP (glass reinforced FRP), metal reinforcements are fine steel wires, outer sheath can be LSZH or PVC flame retardant material, G657 fiber bending radius small.
