Experimental investigation of noise in double-pass erbium-doped fiber amplifiers
Experimental investigation of noise in double-pass erbium-doped fiber amplifiers
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DOI：
10.1002/lapl.200610075
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发表时间：
2007-02
影响因子：
1.7
通讯作者：
A. Naji;M. Abidin;M. Al-Mansoori;A. Faidz;M. Mahdi
中科院分区：
文献类型：
--
作者：
A. Naji;M. Abidin;M. Al-Mansoori;A. Faidz;M. Mahdi
本文研究了双程放大器的噪声系数特性。采用1480 nm泵浦方案，对单程和双程放大进行了实验分析。与单程放大器相比，双程放大器的噪声系数损失是由相对于初始信号方向的反向放大自发辐射的产生造成的。因此，信号的光信噪比在具有相同数量的噪声系数惩罚的情况下降低。
In this paper, noise figure characteristics of double-pass amplifiers are investigated. Experimental analysis between single-pass and double-pass amplifications is discussed with 1480 nm pumping scheme. The noise figure penalty of the double-pass amplifier compared to single-pass amplifier is contributed by the generation of amplified spontaneous emission in backward direction with respect to the initial signal direction. Thus, the optical signal-to-noise ratio of the signal is degraded with the same amount of the noise figure penalty.