Optical Fiber Flowmeter Using Silver-coated FBG Cascaded by Waist-enlarged Bitaper
A novel hot-wire flowmeter based on a silver-coated optical flber Bragg grating(FBG)cascaded by waist-enlarged bitaper is proposed and experimentally demonstrated.The silver coating deposited on the surface of the FBG absorbs light of a pump laser,which is coupled into the flber cladding by the specially-fabricated flber waist-enlarged bitaper,to generate heat.Thus,the temperature of the FBG increases to a certain level,while air flow cools down the FBG by taking heat away.Bragg wavelength of the FBG changes with velocity of air flow according to a certain relationship.Experimental results show that a large measurement range up to 13.7 m/s is realized.
Xinhuai Wang Xinyong Dong Yan Zhou
Institute of Optoelectronic Technology,China Jiliang University,Hangzhou 310018,China
国际会议
Progress in Electromagnetics Research Symposium 2014(2014年电磁学研究新进展学术研讨会)
广州
英文
835-838
2014-08-01（万方平台首次上网日期，不代表论文的发表时间）