| 同向泵浦拉曼放大器中泵浦-信号间四波混频研究 |
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| 引用本文： | 常建华,冒晓莉,陶在红. 同向泵浦拉曼放大器中泵浦-信号间四波混频研究[J]. 量子电子学报, 2008, 25(2): 246-251 |
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| 作者姓名： | 常建华 冒晓莉 陶在红 |
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| 作者单位： | 南京信息工程大学电子与信息工程学院,江苏,南京,210044 |
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| 基金项目： | 江苏省高校自然科学基金计划项目，南京信息工程大学科研项目 |
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| 摘 要： | 研究了同向泵浦分布式拉曼放大器(DRA)中泵浦-信号间的四波混频(FWM)效应.基于分段求和法,导出了不同零色散波长光纤组成的前向泵浦DRA中FWM功率的计算公式.考虑受激拉曼放大的情况下,数值模拟了DRA中FWM引起的信道串扰随光纤传输距离的演变,以及FWM与光纤零色散波长之间的关系.理论分析了色散补偿光纤(DCF)对FWM串扰的抑制效应.计算结果表明,在采用非零色散位移光纤(NZDSF)作为传输介质的DRA中,泵浦-信号间存在着较强的FWM效应,严重影响了密集波分复用(DWDM)系统的传输性能.引入适量DCF,不仅能降低DRA中FWM引起的信道串扰,还可有效消除色散导致的波形失真.
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| 关 键 词： | 光通信 四波混频 相位失配 拉曼放大器 |
| 文章编号： | 1007-5461(2008)02-0246-06 |
| 收稿时间： | 2007-04-12 |
| 修稿时间： | 2007-04-12 |
Study on pump-signal four-wave mixing in co-pumped Raman amplifier |
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| CHANG Jian-hua,MAO Xiao-li,TAO Zai-hong. Study on pump-signal four-wave mixing in co-pumped Raman amplifier[J]. Chinese Journal of Quantum Electronics, 2008, 25(2): 246-251 |
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| Authors: | CHANG Jian-hua MAO Xiao-li TAO Zai-hong |
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| Affiliation: | CHANG Jian-hua MAO Xiao-li TAO Zai-hong (College of Electronic , Information Engineering,Nanjing University of Information , Science Technology,Nanjing 210044,China) |
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| Abstract: | Pump-signal four wave mixing(FWM)in co-pumped distributed Raman amplifier(DRA)is stud- ied.Also,the calculation formula for the FWM power in DRA with nonuniform zero dispersion wavelengths is derived based on the method of sum of subsections.FWM induced channel crosstalk distribution along the transmission fiber and the interrelationship between FWM and the location of the fiber zero dispersion wavelength are simulated numerically.The suppression effect on FWM by introducing proper dispersion compensation f... |
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| Keywords: | optical communication four-wave mixing phase mismatching Raman amplifier |
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