基于高频微波技术的分布式光纤传感器布里渊散射信号检测

CORC > 上海光学精密机械研究所 > 中国科学院上海光学精密机械研究所 > 高功率激光物理国家实验室

	基于高频微波技术的分布式光纤传感器布里渊散射信号检测; Detection of Spontaneous Brillouin Backscattered Power in Distributed Optical Fiber Sensor System Based on High Frequency Microwave Technology
	孙安 ; 陈嘉琳 ; 李国扬 ; 王利 ; 常丽萍 ; 林尊琪
刊名	中国激光
	2007
卷号	34 期号:4 页码:503
关键词	测量与计量 measurement and metrology 光纤传感器 optical fiber sensors 布里渊散射 Brillouin scattering 电光调制 electro-optical modulation 相干检测 optical coherent detection
ISSN号	0258-7025
其他题名	Detection of Spontaneous Brillouin Backscattered Power in Distributed Optical Fiber Sensor System Based on High Frequency Microwave Technology
中文摘要	分析了布里渊分布式光纤传感技术原理,采用自行研制的光纤单纵模分布反馈(DFB)激光器结合电光调制技术,利用相干检测技术,对布里渊微弱后向散射信号进行检测。通过改进滤波放大技术,对微弱后向散射光信号进行有效放大,再用扰偏技术及信号采样平均处理,实现对光纤传感器后向布里渊散射信号在11 GHz高频段直接采集显示。结果表明,探测所得布里渊散射信号峰值功率可达50 mV,能有效降低解调系统信号检测难度,改善了系统信噪比(SNR)。初步实验结果证明了该方案的可行性。; The technique of Brillouin scattering distributed optical fiber sensing has been presented. Optical heterodyne detection was used to detect the weak Brillouin back scattering signal based on single longitudinal mode distributed feedback (DFB) laser and electric optical modulation technique. The scattering signal was amplified effectively by improving the filter and erbium doped fiber amplifier (EDFA). The 11 GHz radio-frequency (RF) signal of Brillouin back scattering is gathered and averaged. The experimental procedures and results are presented. The results show that the peak power of Brillouin back scattering at 11 GHz can reach 50 mV, and the intensity noise of light source induced the system's signal to noise ratio (SNR) decreased greatly, which reduced the difficulty of signal process in demodulation system. The experimental results confirm that the configuration is feasible.
分类号	TN247;TP212.14
收录类别	ei
语种	中文
公开日期	2009-09-18
内容类型	期刊论文
源URL	[http://ir.siom.ac.cn/handle/181231/3166]
专题	上海光学精密机械研究所_高功率激光物理国家实验室
推荐引用方式 GB/T 7714	孙安,陈嘉琳,李国扬,等. 基于高频微波技术的分布式光纤传感器布里渊散射信号检测, Detection of Spontaneous Brillouin Backscattered Power in Distributed Optical Fiber Sensor System Based on High Frequency Microwave Technology[J]. 中国激光,2007,34(4):503, 506.
APA	孙安,陈嘉琳,李国扬,王利,常丽萍,&林尊琪.(2007).基于高频微波技术的分布式光纤传感器布里渊散射信号检测.中国激光,34(4),503.
MLA	孙安,et al."基于高频微波技术的分布式光纤传感器布里渊散射信号检测".中国激光 34.4(2007):503.