Simulations of Pump Absorption in Tandem-Pumped Octagon Double-Clad Fibers
The cladding pumping within a double-clad fiber structure is an effective technique to convert high-power multimode beam into high-power, almost diffraction limited beam.Since the pump efficiency is limited by the presence of higher skew-ray modes, geometrical perturbations are used to scramble the Test Kits modes and to achieve a higher overlap of