| 一种LPFG浓度传感解调技术研究 |
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| 引用本文： | 赵洪霞,丁志群,方晓惠,贾辉,王金霞,鲍吉龙.一种LPFG浓度传感解调技术研究[J].光电子技术,2010,30(1). |
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| 作者姓名： | 赵洪霞 丁志群 方晓惠 贾辉 王金霞 鲍吉龙 |
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| 作者单位： | 宁波工程学院电子与信息E程学院光电子研究室,浙江宁波,315016 |
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| 基金项目： | 宁波市自然科学基金项目 |
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| 摘 要： | 采用F-P可调滤波器对长周期光纤光栅的某级透射谱进行波长扫描,借助探测器和示波器对信号光波在驱动信号周期内所形成的负脉冲间隔进行测量,实现信号解调.利用此系统对蔗糖溶液浓度从0到饱和进行测量,测得系统传感灵敏度的实验值为0.02 ms Lg~(-1).
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| 关 键 词： | 传感技术 长周期光纤光栅 浓度传感 F-P可调滤波器 解调 |
A Novel LPFG Concentration Sensing Demodulation Technique |
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| Zhao Hongxia,Ding Zhiqun,Fang Xiaohui,Jia Hui,Wang Jinxia,Bao Jilong.A Novel LPFG Concentration Sensing Demodulation Technique[J].Optoelectronic Technology,2010,30(1). |
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| Authors: | Zhao Hongxia Ding Zhiqun Fang Xiaohui Jia Hui Wang Jinxia Bao Jilong |
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| Abstract: | A novel technique for LPFG sensor signal demodulation is introduced. The wavelength-shift of sensor grating affected by the measured concentration is converted into variation of time-interval between negative-going pulses that is scanning by F-P tunable filter controlled by PZT. The sensing sensitivity of this system was demonstrated to be 0. 02 ms Lg~(-1), experimental-ly. |
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| Keywords: | sensor technique long period fiber grating concentration sensor F-P tunable filter demodulation |
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