| DWDM波长转换技术在超长距SDH传输网中的应用 |
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| 引用本文： | 王红军,薛惠明.DWDM波长转换技术在超长距SDH传输网中的应用[J].电力系统通信,2007,28(Z1):14-16. |
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| 作者姓名： | 王红军 薛惠明 |
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| 作者单位： | 徐州供电公司,江苏,徐州,221005 |
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| 摘 要： | SDH光信号在超长中继距离传输中存在信噪比下降的问题.文章介绍了在500 kV东明开关站至三堡变光通信工程实施中,采用DWDM波长转换技术克服这一难题的成功经验.通过案例可以看出,在超长中继距离SDH光通信线路中,锁定SDH输出信号的中心频率并在接收端采用光过滤器对噪声进行抑制,是解决信噪比下降、保证传输质量的有效办法.
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| 关 键 词： | 超长距光通信 同步数字系列 密集波分复用 光信噪比 |
| 文章编号： | 1005-7641(2007)S0-0014-03 |
| 修稿时间： | 2007年3月30日 |
Application of DWDM wavelength conversion technology in ultra long haul SDH transmission network |
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| WANG Hong-jun,XUE Hui-ming.Application of DWDM wavelength conversion technology in ultra long haul SDH transmission network[J].Telecommunications for Electric Power System,2007,28(Z1):14-16. |
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| Authors: | WANG Hong-jun XUE Hui-ming |
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| Affiliation: | Xuzhou Power Supply Company, Xuzhou 221005, China |
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| Abstract: | In ultra long haul transmission cases, the SNR of SDH optical signal will decrease. This paper introduces a successful example of overcoming this problem by using the technology of DWDM wavelength conversion in optical fiber communication engineering from Dongming to Sanbao 500 kV substations. The practical example shows that locking the centre frequency of SDH output signal and restraining noise with optical filter in receiver can effectively improve SNR and guarantee the transmission quality. |
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| Keywords: | ultra long haul optical telecommunication SDH DWDM OSNR |
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