Negative feedback optical amplification effect based on cross-gain modulation in semiconductor optical amplifiers
Negative feedback optical amplification effect based on cross-gain modulation in semiconductor optical amplifiers
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DOI：
10.1063/1.2183748
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发表时间：
2006-03
影响因子：
4
通讯作者：
Y. Maeda
中科院分区：
文献类型：
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作者：
Y. Maeda
采用基于交叉增益调制的负反馈技术，在InGaAsP/InP半导体光放大器中实现了负反馈光放大效应。负反馈光放大能够提供增益、波形和基线光学稳定的输出信号。在0.1-10 GHz的宽频带内，波形的失真极小。此外，可以通过使用可变光衰减器控制负反馈功率的量来调节增益。在物理学中，光学放大器被认为是电子学中同相运算放大器的光学等价物。
A negative feedback optical amplification effect was confirmed using negative feedback based on cross-gain modulation in an InGaAsP∕InP semiconductor optical amplifier. The optical amplifier with negative feedback was capable of providing an output signal whose gain, wave form and baseline, were stabilized optically. The distortion of the wave form was extremely small in a wide frequency band of 0.1–10GHz. In addition, the gain can be adjusted by controlling the amount of negative feedback power using a variable optical attenuator. In physics, the optical amplifier is considered as the optical equivalent of a noninverting operational amplifier in electronics.