Ono Hirotaka, Yamada Makoto
Appl Opt. 2018 May 10;57(14):3747-3755. doi: 10.1364/AO.57.003747.
This paper investigates the applicability of a model of a cladding-pumped multicore erbium-doped fiber amplifier (CP-MC-EDFA) that employs the average inversion level of an erbium ion. The model is modified to include the effects of multiple cores for modifications of the background loss coefficient of the pump light. The model is validated experimentally by measurements of the pump power, gain transient, and intercore cross-gain modulation of a cladding-pumped 12-core EDFA in which the pump light is uniformly distributed in the inner cladding. The calculated and measured pump power, gain transient response, and gain change caused by the intercore cross-gain modulation agree well, suggesting the modified model is useful for characterizing a CP-MC-EDFA.
本文研究了一种采用铒离子平均反转水平的包层泵浦多芯掺铒光纤放大器（CP-MC-EDFA）模型的适用性。该模型经过修改，以纳入多芯对泵浦光背景损耗系数修正的影响。通过测量包层泵浦的12芯EDFA的泵浦功率、增益瞬态和芯间交叉增益调制对该模型进行了实验验证，其中泵浦光均匀分布在内包层中。计算得到的和测量得到的泵浦功率、增益瞬态响应以及由芯间交叉增益调制引起的增益变化吻合良好，这表明修改后的模型对于表征CP-MC-EDFA是有用的。
