基于OFDR/WDM的光纤光栅传感网络研究 |
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引用本文: | 李志全,黄丽娟,吴飞,王会波,腾峰成.基于OFDR/WDM的光纤光栅传感网络研究[J].光子学报,2005,34(1):86-88. |
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作者姓名: | 李志全 黄丽娟 吴飞 王会波 腾峰成 |
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作者单位: | 燕山大学仪器科学与工程系,河北,秦皇岛,066000;燕山大学仪器科学与工程系,河北,秦皇岛,066000;燕山大学仪器科学与工程系,河北,秦皇岛,066000;燕山大学仪器科学与工程系,河北,秦皇岛,066000;燕山大学仪器科学与工程系,河北,秦皇岛,066000 |
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基金项目: | 国家自然科学基金 (项目编号 :6 0 3770 2 )资助项目 |
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摘 要: | 应用光频域反射复用技术与波分复用技术,解决了光纤光栅传感网络的寻址问题;使用可调谐滤波器,实现了复用信号的解调;具体地分析了光频域反射复用技术的基本原理,从理论上推算了系统的空间分辨率和测量范围,并进行了3×3光栅阵列传感网络的实验研究. 该方案充分利用了光信号的频率和波长信息,在光源功率足够大的前提下,显示出新设计的传感网络具有寻址和解调几百个光栅信号的潜在能力,在大型建筑设施分布式二维或三维应力监测中有很好的应用前景.
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关 键 词: | 光纤光栅 光频域反射复用(OFDR) 波分复用(WDM) 传感网络 |
收稿时间: | 2003-07-14 |
修稿时间: | 2003年7月14日 |
Study of Fiber Bragg Grating Sensor System Based on OFDR/WDM |
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Institution: | (Instrument Science and Engineering Department, Yanshan University, Qinhuangdao 066000) |
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Abstract: | Optical frequency domain reflectometry(OFDR) techniques and wavelength division multiplexing(WDM) techniques are applied to interrogating fiber grating array and tunable optical filter (TOF) to modulating multiplex signals. The fundamental principle of OFDR has been analyzed and the space resolution and measurement range of this system were calculated theoretically and then a sensor network of FBG array was experimentally demonstrated. Making full use of optical frequency and wavelength information, this system has shown the potentialities of interrogating and demodulating signals from several hundreds FBG sensors on the premise that power of light source is large enough. This system has good prospects in two or three-dimensional distribution stress monitoring of large structures. |
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Keywords: | Fiber grating OFDR WDM Sensor network |
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