| 基于CDMA的布拉格光纤光栅传感系统的仿真分析 |
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| 引用本文： | 黎威,文泓桥.基于CDMA的布拉格光纤光栅传感系统的仿真分析[J].光学与光电技术,2013,11(3):23-26. |
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| 作者姓名： | 黎威 文泓桥 |
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| 作者单位： | 武汉理工大学光纤传感技术国家工程实验室,湖北武汉,430070 |
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| 基金项目： | 武汉理工大学自主创新基金 |
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| 摘 要： | 讨论了光纤光栅传感系统中常用的复用技术及其限制,阐述了利用CDMA技术实现光纤布拉格光栅阵列波长解调的复用方式,对系统的原理和性能进行了理论分析。在此基础上通过MATLAB做了基于CDMA的光纤光栅传感仿真分析,仿真结果表明该方法能区分反射波长重叠的光栅,从而提高FBG网络复用的频带利用率。
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| 关 键 词： | 光纤布拉格光栅 复用 m序列 自相关性 信噪比 |
Analysis and Simulation of Fiber Bragg Grating Sensing System Based on CDMA |
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| LI Wei,WEN Hong-qiao.Analysis and Simulation of Fiber Bragg Grating Sensing System Based on CDMA[J].optics&optoelectronic technology,2013,11(3):23-26. |
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| Authors: | LI Wei WEN Hong-qiao |
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| Institution: | ( National Engineering Laboratory of Fiber Optic Sensing Technology, Wuhan Universily of TechnoLogy, Wuhan 430070, China ) |
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| Abstract: | The common muhiplexing techniques in the fiber grating sensing system and their limits are introduced. The de modulation of the wavelength of multiplexing Fiber Bragg grating method is explained. In order to increase the multiplying density of Fiber Bragge Grating （FBG） sensors, a novel FBG sensing system based on CDMA technology is developed. Sire ulation experiment indicates the CDMA technology combines with optical fiber grating sensing system together successfully. Furthermore, the system can distinguishes the application rate of FBG and enhance the FBG network band. |
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| Keywords: | fiber Bragg grating multiplexing m sequences autocorrelation signal to noise ratio |
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