首页|Temperature-insensitive Quasi-distributed Fiber-optic Fabry-Perot High-pressure sensing based on microwave interference system
Temperature-insensitive Quasi-distributed Fiber-optic Fabry-Perot High-pressure sensing based on microwave interference system
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
? 2022 Elsevier LtdA temperature-insensitive quasi-distributed fiber-optic high-pressure sensing technique based on cascaded extrinsic Fabry-Perot (EFP) sensing units and an optical carrier based microwave interference system (OCMI) is proposed and demonstrated. The EFP unit formed by hollow-core photonic bandgap fiber has advantages of low-insertion loss and low temperature–pressure cross sensitivity, and the OCMI system based on a tunable single-wavelength light can simultaneously reconstruct optical interferograms of multiple EFP units. Experimental results show the optical interferograms reconstructions of three cascaded EFP units are well agreement with those using an optical spectrum analyzer. Moreover, the EFP unit has a wide measurement range of 0 ～ 100 MPa and a low temperature–pressure cross-sensitivity of –0.02 MPa/℃, which can be comparable to that of a point fiber-optic pressure sensor. This technique provides a new idea of high-performance distributed pressure sensing.
Fiber Optics Research Center Key Laboratory of Optical Fiber Sensing & Communications (Ministry of Education) University of Electronic Science & Technology of China
Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China
NSTL
Elsevier
