Numerical Simulation of Net Gain Characteristics for Step Dopant Er∶Al<SUB>2</SUB>O<SUB>3</SUB> Waveguide Amplifier

The theoretical model of Er-doped waveguide amplifier with longitudinal step-dopand was build.The finite element method,rate equations and propagation equations were used to simulate numerically net gain characteristics of the amplifier. The results show that pumping efficiency of the amplifier is improved. Net gain and signal output power of step-dopant waveguide amplifier increase 9.2% and 90.5% respectively than uniform-dopant waveguide amplifier. Length of the amplifier,however,is shortened 16.9%.

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Er-doped Al₂O₃ waveguide amp Integrated optics Longitudinal step-doped Net gain

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Li Chengren, Song Changlie, Li Shufeng, Li Jianyong, Lei Mingkai. Numerical Simulation of Net Gain Characteristics for Step Dopant Er∶Al₂O₃ Waveguide Amplifier[J]. Acta Photonica Sinica, 2006, 35(2): 192

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