... box.Structure Fiber optic patch cord is similar to coaxial cable, only without mesh shield. Its center is core of glass ... divided to common silicon-based optical fiber, Single-mode and Multi-mode patch cord, and other fiber optic patch cord that transmit through media ... , SC, ST, LC, MTRJ, MU, E2000, DIN4, etc. Single-mode fiber: Cable Color is yellow. The connector and protective sleeve are blue ...