Analysis of energy transfer between Bismuth and Erbium in BEDF under 830 nm Pump

Abstract

The experiment investigates energy transfer mechanism between Bismuth and Erbium in Bismuth and Erbium co-doped fibre (BEDF). In particular, energy transfer between Bismuth Active Centre linked to Aluminium (BAG-Al) and Er3+ is investigated in aluminosilicate BEDF under 830 nm pump using rate equations. It is observed that energy flows and gradually uprises from BAC-Al to Er3+ while pump power is stepping forward. Significantly, the non-radiative decay rate, along with the up-conversion, has negligible impact on the energy transfer characteristics in BEDF. The simulation results depict that the energy level N3 of Er3+ receives greater energy from BAG-Al than N6 of Er3+, up to 0.4 W power at 830 nm pumping. Also, the ion density and the PL intensity fall for N2 of Er3+, while those going up for N3, N5, N7 of Er3+ with pump paver increment.