| 基于SOA中FWM效应实现全光波长变换 |
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| 引用本文： | 张丽,敖发良.基于SOA中FWM效应实现全光波长变换[J].桂林电子科技大学学报,2003,23(2):1-5. |
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| 作者姓名： | 张丽 敖发良 |
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| 作者单位： | 桂林电子工业学院,通信与信息工程系,广西,桂林,541004 |
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| 摘 要： | 基于半导体光放大器的四波混频 FWM(Four- Wave Mixing)型波长变换技术发展前景最好 ,但由于半导体光放大器的自发辐射噪声 ,导致输出信噪比劣化。如果利用非线性耦合波方程推导出变换光信噪比的表达式 ,分析影响信噪比的参数 ,对于一定的输入信号光 ,较大的泵浦光就有利于提高变换光信噪比 ,大的偏置电流和小的频差可以改善信噪比 ,对优化设计 SOA- FWM波长变换器具有一定的参考价值。
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| 关 键 词： | 全光波长变换 四波混频 半导体光放大器 放大器自发辐射 |
| 文章编号： | 1001-7437(2003)02-01-05 |
| 修稿时间： | 2003年2月21日 |
A Study on All Optical Wavelength Conversion Based on SOA-FWM |
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| ZHANG Li,AO Fa-liang.A Study on All Optical Wavelength Conversion Based on SOA-FWM[J].Journal of Guilin Institute of Electronic Technology,2003,23(2):1-5. |
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| Authors: | ZHANG Li AO Fa-liang |
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| Abstract: | Wavelength conversion is one of the key techniques in all optical networks.Although the optically transparent wavelength conversion technique based on four-wave mixing in semiconductor optical amplifiers has good prospect in the future networks,the output signal to noise ratio (SNR) is degenerated due to amplified spontaneous emission noise of semiconductor optical amplifier.The theory of four-wave mixing in semiconductor optical amplifiers is investigated in this study,and the formula of output SNR is derived from nonlinear coupled wave equation.The parameters of affecting SNR are analyzed by formular,and are studied by photonic software emulation system. The effects for SNR by input pump power,bias current and pump-signal detuning in frequency are analyzed.The results show for a given signal power level and high pump power level is beneficial for increasing output SNR.Big bias current and small pump-signal detuning in frequency can improve output SNR.The studying results set the consulted value on optimization of SOA-FWM wavelength converters designing. |
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| Keywords: | all optical wavelength conversion four-wave mixing semiconductor optical amplifier amplified spontaneous emission |
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