Numerical study of a ferrule-top cantilever optical fiber sensor for wind-tunnel applications and comparison with experimental results

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• 作者：A. Cipullo^a ; ^{alessio.cipullo@unina2.it}  ; [Author Vitae] ; G. Gruca^b  ; [Author Vitae] ; K. Heeck^b  ; [Author Vitae] ; F. De Filippis^c  ; [Author Vitae] ; D. Iannuzzi^b  ; [Author Vitae] ; A. Minardo^a  ; [Author Vitae] ; L. Zeni^a ; ^d  ; [Author Vitae]
• 关键词：Ferrule-top cantilever ; Finite-element method (FEM) ; Flow velocity measurement ; Pitot tube ; Optical fiber sensor
• 刊名：Sensors and Actuators A ; Physical
• 出版年：2012
• 期刊代码：160_09244247
• 类别：et
• 出版时间：May, 2012
• 卷：178
• 期：Complete
• 页码：17-25
• 文件大小：1854 K

摘要

We present a numerical analysis of an air flow velocity sensor based on a fiber-optic ferrule-top cantilever. The device forms a low-finesse Fabry-Perot interferometer, with one of the two reflecting surfaces constituted by a cantilever beam. Under the effect of the flow pressure, the cantilever bends producing a change in the cavity length of the Fabry-Perot and therefore a modification of its optical response. The numerical analysis, performed by use of finite-element method (FEM), is then compared with a set of experimental results obtained in a small wind-tunnel.