何华杰, 顾畹仪, 李国瑞, et al. The Variation of Signal to Noise Ratio in Optical Communication System Using Concatenated Optical Amplifiers[J]. Acta Electronica Sinica, 1997, (1).
何华杰, 顾畹仪, 李国瑞, et al. The Variation of Signal to Noise Ratio in Optical Communication System Using Concatenated Optical Amplifiers[J]. Acta Electronica Sinica, 1997, (1).DOI：
We star t form the photon number fluctuation in EDFA’S output
and get the analytical expression of signal to noise ratio（SNR） of EDFA’s output. This method is valid when EDFA works in saturation condition. Then the SNR in optical fiber communication systems using cascaded EDFAs is analyzed and our results are compared with previous work.
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