Double clad fiber amplifier

文件类型：PDF文档
文件大小：173K
Optical fiber amplifier includes mono-mode core with refractive index (n1), first cladding around core with refractive index (n2); further cladding around first cladding with refractive index (n3); and ring with refractive index (n4) doped with rare earth material surrounding core. First cladding shows partly radial refractive index (n2) as function of radius almost continuously decreasing.