Abstract
Based on the combined model of erbium-doped waveguide amplifier with high erbium ion concentration, the rate equation and evolution equation is solved numerically. The waveguide parameters such as doping concentration, waveguide length are optimized in this paper. With pumping power of 150 mW , the optimal erbium doping concentration and waveguide length is 6×10 26 m −3 , 15 cm or so, respectively. The amplifier with these optimal parameters may reach gain more than 35 dB .
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