中国激光, 2008, 35 (s2): 42, 网络出版: 2009-01-05
空间光通信中空间辐射对光纤放大器性能的影响
Space Radiation Effect on the Characters of Fiber Amplifiers for Space Optical Communication
光纤光学 卫星光通信 伽玛辐射影响 掺铒光纤放大器 铒镱共掺光纤放大器 空间环境 fiber optics inter-satellite optical communication gamma-ray effects erbium-doped fiber amplifier erbium-ytterbium co-doped fiber amplifier space environment
摘要
以60Co为辐射源, 通过地面辐射模拟实验, 对掺铒和铒镱共掺两种光纤放大器的性能变化进行了对比分析。实验结果表明, 在总剂量为40 krad的低剂量轨道辐射环境中, 信号光通过这两种光纤放大器后, 其中心波长及半宽都没有发生显著变化, 这为光纤放大器能够应用于空间光通信提供了保证; 在辐照过程中掺铒光纤放大器的增益下降3.91 dB, 而铒镱共掺光纤放大器的增益下降17.60 dB, 表明镱离子的存在使得铒镱共掺光纤放大器的抗辐射性能要明显弱于掺铒光纤放大器, 这也为不同发射功率下的空间光通信系统在选择合适类型的放大器时提供了一个有益的参考。
Abstract
The erbium-doped optical amplifier (EDFA) and erbium-ytterbium co-doped fiber amplifier optical amplifier (EYDFA) are irradiated by 60Co to simulate the condition on the low radiation dose orbits. Then the deterioration of their characters is analyzed by comparing these two kinds of fiber amplifiers. The central wavelength and half wave width of amplified signal change little in the radiation experiment, so it indicates that both of two kinds of fiber amplifiers can be applied to the inter-satellite optical communication systems. But we also find that the gain of EDFA comes down 3.91 dB, while the gain of EYDFA comes down 17.60 dB. The results indicate that ytterbium makes the antiradiation of EYDFA much worse than that of EDFA in the same radiation environment. These results also will be a good reference for space communication designers to choose the right kind of fiber amplifiers in each different system.
李密, 马晶, 谭立英, 周彦平, 于思源, 俞建杰, 常国龙, 卢春莲, 车驰. 空间光通信中空间辐射对光纤放大器性能的影响[J]. 中国激光, 2008, 35(s2): 42. Li Mi, Ma Jing, Tan Liying, Zhou Yanping, Yu Siyuan, Yu Jianjie, Chang Guolong, Lu Chunlian, Che Chi. Space Radiation Effect on the Characters of Fiber Amplifiers for Space Optical Communication[J]. Chinese Journal of Lasers, 2008, 35(s2): 42.
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