Fiber Bragg gratings sensing network with a bus chain typology structure

Wen Xiaoyan; Shuai Huang; Zhu FangdongZhang Dongsheng

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Fiber Bragg gratings sensing network with a bus chain typology structure

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A fiber Bragg grating (FBG) sensing network with a bus chain typology structure based on time-division multiplexing (TDM) technology has been developed. Each FBG sensor was placed in an isolated branching circuit separated by an optical splitter. By doing this, multiple reflection and spectrum shadow, which are common in a traditional TDM network, were eliminated since incident light reflected by each sensor did not go through the other sensors. Interference among different FBGs was also avoided. The system was experimentally verified by constructing such a network with 17 FBGs involved. Wavelength and position interrogation were successfully realized. Temperature experiment was carried out on four of the FBGs and the sensitivity was 9.87, 9.92, 9.91, and 9.97 pm/degrees C, respectively. The durability, reliability, and measuring accuracy of the sensing network were effectively improved due to the bus chain typology structure. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)

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来源
《Optical Engineering》 |2016年第6期|066102-1-066102-5|共5页
作者
Wen Xiaoyan; Shuai Huang; Zhu FangdongZhang Dongsheng;
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作者单位

Wuhan Univ Technol, Sch Sci, 122,Luoshi St, Wuhan 430070, Peoples R China;

Wuhan Univ Technol, Natl Engn Lab Fiber Opt Sensing Technol, 205,Luoshi St, Wuhan 430070, Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类计量学;光学仪器;
关键词
bus chain typology; fiber Bragg gratings; distributed sensing; multiple reflection;

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Fiber Bragg gratings sensing network with a bus chain typology structure

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