Comparative study on temperature-dependent multichannel gain and noise figure distortion for 1.48- and 0.98-μm pumped EDFAs
Comparative study on temperature-dependent multichannel gain and noise figure distortion for 1.48- and 0.98-μm pumped EDFAs
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1.48 和 0.98 μm 泵浦 EDFA 的温度相关多通道增益和噪声系数失真的比较研究
DOI：
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发表时间：
1998
影响因子：
2.6
通讯作者：
Namkyoo Park
中科院分区：
文献类型：
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作者：
Ju Han Lee;Won Jae Lee;Namkyoo Park
通过基于测量的数值模拟，比较了硅基掺铒光纤放大器（EDFAs）在1.48和0.98 /spl mu/m两种泵浦波长下多通道增益平坦度和噪声系数（NF）的温度依赖性。由于泵浦发射截面对温度敏感，1.48-/spl mu/m泵浦比0.98 /spl mu/m泵浦表现出更高的温度敏感性（最大增益平坦度失真0.75 db，平均增益电平漂移0.57 db， 25/spl℃变化0.3 db NF变化）（最大增益平坦度失真0.5 db，平均增益电平漂移0.015 db， 25/spl℃变化0.05 db NF变化）。然而，也发现畸变纹波光谱主要来自于信号截面的变化和不对称的增益温度依赖关系，需要在EDFA链路中采用补偿技术，而与泵浦波长无关。
Temperature dependence of multichannel gain flatness and noise figure (NF) was compared for different pump wavelengths of 1.48 and 0.98 /spl mu/m on silica-based erbium-doped fiber amplifiers (EDFAs) through measurement-based numerical simulation. Owing to its temperature sensitive pump emission cross section, the 1.48-/spl mu/m pumping showed greater temperature sensitivity (maximum 0.75-dB gain flatness distortion with 0.57-dB average gain level shift, 0.3-dB NF variation for 25/spl deg/C change) than the 0.98 /spl mu/m pumping (maximum 0.5-dB gain flatness distortion with 0.015-dB average gain level shift, 0.05-dB NF variation for 25/spl deg/C change). However, it was also found that distortion ripple spectra mainly coming from the changes of signal cross sections and asymmetric gain temperature dependence necessitate compensation techniques in the EDFA link, irrespective of pump wavelength.