Analysis of erbium doped holey fiber using fundamental space filling mode

Erbium-doped holey fiber with hexagonal lattice was modeled by using effective index method.In order to calculate the equivalent step index of the periodic structure of the cladding holey optical fiber,all-vectorial fundamental space filling mode approach was utilized.By using EH;mode,we have numerically solved the rate equations of a three-level pumping scheme for a fiber laser.The obtained results have shown a good agreement with the other experimental results,recently.The results have predicted amplifiers with gain efficiencies as high as 10 dB/mW.