What is the Difference Between Single Mode Fiber and Multimode Fiber?
Optical fiber generally divided into three layers: core, cladding and coating. The core and cladding composed of glass with different refractive indices. The fiber core is a glass with a high refractive index (silicon dioxide doped with germanium). And the fiber cladding is a silica glass with a low refractive index (pure silica). Light enters the