Simultaneous sensing of displacement and temperature with a single FBG

来源 :Optoelectronics Letters | 被引量 : 0次 | 上传用户:doujiazhi
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
A novel fiber Bragg grating(FBG) sensor with simultaneous sensing of displacement and temperature is presented.The FBG is affixed on the cantilever inclinedly.The midpoint of FBG exactly coincides with the zero strain layer of a rectangular beam.The vertical displacement can be measured by the broadened bandwidth of FBG as the bandwidth is insensitive to temperature,while the temperature can be measured by the center wavelength shift as the wavelength shift is insensitive to vertical displacement.With 0.1 nm spectral resolution of the analyzer,sensitivities of bandwidth-displacement and center wavelength-temperature are 0.48 nm/mm and 0.05 nm/℃,resolutions are 0.2 mm and 2.0 ℃,and sensing ranges of displacement and temperature are up to 8.5 mm and 45℃ respectively.Experimental results match theoretical analyses very well. A novel fiber Bragg grating (FBG) sensor with simultaneous sensing of displacement and temperature is presented. The FBG is affixed on the cantilever inclinedly. The midpoint of FBG exactly coincides with the zero strain layer of a rectangular beam. by the broadened bandwidth of FBG as the bandwidth is insensitive to temperature, while the temperature can be measured by the center wavelength shift as the wavelength shift is insensitive to vertical displacement. With 0.1 nm spectral resolution of the analyzer, sensitivities of bandwidth-displacement and The center wavelength-temperatures are 0.48 nm / mm and 0.05 nm / ° C., resolutions are 0.2 mm and 2.0 ° C., and sensing ranges of displacement and temperature are up to 8.5 mm and 45 ° C. respectively. Experimental results match theoretical analyzes very well.
其他文献
2013年6月5日《辽沈晚报》C07版以《余华〈第七天〉开篇曝光“我的火化时间约在九点半”》为题,报道余华新作《第七天》即将出版的消息。出版方提前曝光了《第七天》的开篇:
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊
这是郑州80高龄老读者李振亚先生给本刊写信时所用的信封。它被发在微博上后,引发了网友的围观。详情请见本期《向“颤抖体”致敬》。这是李振亚先生赠送本刊的锦旗。它是对
职业素养教育居于高职院校人才培养工作的中心地位。高职院校应当建立符合域情校情的院校管理机构,构建以就业为导向的人才培养模式,形成内外良性互动的教育反馈机制,创新职
目的比较冠状动脉CT血管造影(coronary CT angiography,CCTA)应用前瞻性心电门控扫描+滤波反投影算法(filter back projection,FBP)、纯化单能谱最佳单能量+FBP法、纯化单能
在巴林,人们觉得什么好笑?在哪里伍迪·艾伦会比超人更受欢迎?哪国人民看起来真的喜欢《独行侠》?这样的问题还有很多很多。票房Mojo全面透彻的数据为我们道出了世界各地的9
本文以培养学生综合职业能力为目标,依据岗位(群)能力要求,校企合作共同制定PLC实践教学课程标准,科学的创新实践教学模式,构建认知领域、能力领域和职业素质领域相融合的多
2012年10月下《文史参考》刊载的讲司徒雷登的一篇文章——《最后的中国岁月》写道:“1948年美国大选,共和党候选人杜威承诺,当选后会给中国提供大规模的财政和军事援助,因此
《把孩子的小错误编成睡前小故事》一文的结尾说:“把孩子的错误编成睡前故事,一方面不会滋生孩子的抵触情绪,孩子会虚心地从故事里受到启发,另一方面,家长也不用再苦口婆心
对LD端面泵浦圆柱形Nd:YAG晶体产生946 nm激光的晶体热效应进行了分析。考虑晶体的准三能级结构和腔内传播功率的分布,对热转换系数进行了修改,得到了更符合实际情况的晶体内