A practical FBG pressure sensor based on diaphragm-cantilever

Abstract A practical FBG pressure sensor on the basis of diaphragm-cantilever was proposed and experimentally demonstrated. The measurement principle and the simulation verification were introduced. The proposed sensor is composed of a diaphragm, a cantilever, a rod and a cover. The rod transfer the deformation of the diaphragm to the cantilever. A pair of FBGs were stuck on the two sides of the cantilever respectively. Theoretical relationship between the wavelength shift and pressure had been established by theoretical analysis. The experiment showed the sensitivity was 258.28 pm/MPa in the range of 0–2 MPa, and its linearity can reach 0.999. The pressure sensor has potential to be applied to pipeline pressure measurement.

[1]  M. Z. Zulkifli,et al.  High‐sensitivity pressure sensor using a polymer‐embedded FBG , 2008 .

[2]  H. Mu,et al.  Pressure Sensing Characteristic of Fiber Bragg Grating Based on Diaphragm-Cantilever Beam , 2014 .

[3]  Asrul Izam Azmi,et al.  Graphene diaphragm integrated FBG sensors for simultaneous measurement of water level and temperature , 2016 .

[4]  Yong Zhao,et al.  Review of salinity measurement technology based on optical fiber sensor , 2018 .

[5]  Yong Zhao,et al.  Theoretical analysis of high-sensitive seawater temperature and salinity measurement based on C-type micro-structured fiber , 2018 .

[6]  Li Qin,et al.  Design and Investigation of a Reusable Surface-Mounted Optical Fiber Bragg Grating Strain Sensor , 2016, IEEE Sensors Journal.

[7]  Radek Kuchta,et al.  Design of a Pressure Sensor Based on Optical Fiber Bragg Grating Lateral Deformation , 2010, Sensors.

[8]  J. Linesh,et al.  Design and development of diaphragm-based EFPI pressure sensor , 2011, International Conference on Fiber Optics and Photonics.

[9]  T. K. Gangopadhyay,et al.  Fibre Bragg gratings in structural health monitoring—Present status and applications , 2008 .

[10]  L. Reekie,et al.  Optical in-fibre grating high pressure sensor , 1993 .

[11]  Byoungho Lee,et al.  Review of the present status of optical fiber sensors , 2003 .

[12]  Yong Zhao,et al.  Small in-fiber Fabry-Perot low-frequency acoustic pressure sensor with PDMS diaphragm embedded in hollow-core fiber , 2018 .

[13]  Lin Htein,et al.  Large dynamic range pressure sensor based on two semicircle-holes microstructured fiber , 2018, Scientific Reports.

[14]  Fiber optic pressure sensor based on a single-mode fiber F–P cavity , 2010 .

[15]  Sai Shankar Madhuvarasu,et al.  FBG based high sensitive pressure sensor and its low-cost interrogation system with enhanced resolution , 2015 .

[16]  Yanqiu Li,et al.  Membrane‐based fiber Bragg grating pressure sensor with high sensitivity , 2009 .

[17]  Francisco J. Arregui,et al.  Tapered optical-fiber-based pressure sensor , 2000 .

[18]  Zude Zhou,et al.  A diaphragm-type fiber Bragg grating pressure sensor with temperature compensation , 2013 .