Fiber Bragg Grating Pressure Sensor Based on Corrugated Diaphragm  

作　　者：FUHai-wei FUJun-mei QIAOXue-guang 

机构地区：[1]SchoolofElectron.andInform.Eng.,Xi＇anJiaotongUniversity,Xi＇an710049,CHN [2]SchoolofScience,Xi＇anPetroleumUniversity,Xi＇an710065,CHN

出　　处：《Semiconductor Photonics and Technology》2004年第4期278-281,共4页半导体光子学与技术（英文版）

基　　金：NationalNaturalScienceFoundationofChina(6 98770 2 5 ) ;NationalHigh -technologyDevelopmentProject(2 0 0 2AA31315 0 ) ;MajorScienceandTechnologyProjectofMinistryofNationalEducation(0 2 190 ) ;NationalNaturalScienceFoundationofShaanxiProvince(2 0 0 0C3

摘　　要：A kind of fiber Bragg grating pressure sensor based on corrugated diaphragm is proposed. The relationship between the central wavelength of reflective wave of FBG and pressure is given, and the expression of the pressure sensitivity coefficient is also given. Within the range from 0 MPa to 0.3 MPa, the experimental pressure sensitivity is 7.83 nm/MPa, which is 2 610 times than that of the bare fiber grating. The experimental results agree with the theoretical analysis. It is indicated that the expected pressure sensitivity of the sensor can be obtained by optimizing the size and mechanical parameters of the corrugated diaphragm.A kind of fiber Bragg grating pressure sensor based on corrugated diaphragm is proposed. The relationship between the central wavelength of reflective wave of FBG and pressure is given, and the expression of the pressure sensitivity coefficient is also given. Within the range from 0 MPa to 0.3 MPa, the experimental pressure sensitivity is 7.83 nm/MPa, which is 2 610 times than that of the bare fiber grating. The experimental results agree with the theoretical analysis. It is indicated that the expected pressure sensitivity of the sensor can be obtained by optimizing the size and mechanical parameters of the corrugated diaphragm.

关 键 词：Guided wave and fiber optics FBG FBG sensing FBG pressure sensing Pressure sensitivity 

分 类 号：TP212.1[自动化与计算机技术—检测技术与自动化装置]