| 基于WDM和TDM的串联FBG高速列车定位系统 |
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| 引用本文： | 王燕花,简水生,任文华,刘艳,谭中伟.基于WDM和TDM的串联FBG高速列车定位系统[J].光电子．激光,2008,19(8). |
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| 作者姓名： | 王燕花 简水生 任文华 刘艳 谭中伟 |
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| 作者单位： | 北京交通大学全光网络与现代通信网教育部重点实验室,北京,100044;北京交通大学光波技术研究所,北京,100044 |
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| 基金项目： | 国家自然基金资助项目(60607001); 北京交通大学校基金资助项目(2006XZ010) |
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| 摘 要： | 介绍了一种基于波分复用（WDM）和时分复用（TDM）串联光纤Bragg光栅（FBG）的高速列车定位系统。用快速的光功率监测替代FBG的波长监测，定位时延较小（0．2s）；波长漂移转化为光功率的一对负正脉冲波动，提高了定位自动识别的准确性；同时WDM与TDM相结合的系统结构设计，扩大了列车定位系统监测的总长度。
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| 关 键 词： | 光纤Bragg光栅（FBG） 波分复用（WDM） 时分复用（TDM） 列车定位 |
A train locating system based on WDM and TDM Fbg series |
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| WANG Yan-hua,JIAN Shui-sheng,REN Wen-hua,LIU Yan,TAN Zhong-wei.A train locating system based on WDM and TDM Fbg series[J].Journal of Optoelectronics·laser,2008,19(8). |
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| Authors: | WANG Yan-hua JIAN Shui-sheng REN Wen-hua LIU Yan TAN Zhong-wei |
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| Affiliation: | WANG Yan-hua1,2,JIAN Shui-sheng1,REN Wen-hua1,LIU Yan1,TAN Zhong-wei1,2(1.Key Lab of All Optical Network & Advanced Telecommunication Network of EMC,Beijing Jiaotong University,Beijing,100044,China,2.Institute of Lightwave Technology,Beijing 100044,China) |
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| Abstract: | A novel train locating system based on wavelength division multiplexing(WDM) and time division multiplexing(TDM) fiber Bragg gratings(FBG) series is introduced in the article.The location delay is as small as 0.2 s since the wavelength detection is substituted by optical power detection which is much faster.The wavelength shift is transformed to a pulse pair with opposite polarity of the optical power,so the accuracy of the signal detection is optimized.And the detection distance is extended due to the syst... |
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| Keywords: | fiber Bragg grating(FBG) wavelength division multiplexing(WDM) time division multiplexing(TDM) train locating |
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