Hypersensitive high-temperature gas pressure sensor with Vernier effect by two parallel Fabry-Perot interferometers

Optik ◽  
2021 ◽  
pp. 166956
Author(s):  
Zhao Han ◽  
Guoguo Xin ◽  
Pengyu Nan ◽  
Ji Liu ◽  
Jiajie Zhu ◽  
...  
Keyword(s):  
High Temperature ◽  
Pressure Sensor ◽  
Gas Pressure ◽  
Fabry Perot ◽  
Vernier Effect ◽  
High Temperature Gas

scholarly journals High Sensitivity Fiber Gas Pressure Sensor with Two Separated Fabry–Pérot Interferometers Based on the Vernier Effect

Photonics ◽  
2022 ◽  
Vol 9 (1) ◽  
pp. 31
Author(s):  
Xiaokang Song ◽  
Liangtao Hou ◽  
Xiangyu Wei ◽  
Hang Su ◽  
Chang Li ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Pressure Sensors ◽  
High Sensitivity ◽  
Single Mode ◽  
Gas Pressure ◽  
Pressure Sensing ◽  
Fabry Perot ◽  
Inner Diameter ◽  
Vernier Effect ◽  
Micro Cavity

A high sensitivity optical fiber gas pressure sensor based on paralleled Fabry–Pérot interferometers (FPIs) was demonstrated. One micro-cavity FPI is used as a reference FPI (FPI-1) to generate a Vernier effect and the other FPI (FPI-2) is used as a sensing tip. Both FPIs are connected by a 3-dB coupler to form a paralleled structure. The FPI-1 was fabricated by fusion splicing a piece of hollow core fiber (HCF) between two sections of single-mode fibers (SMF), whereas FPI-2 was formed by fusion splicing a section of HCF between SMF and a piece of HCF with a slightly smaller inner diameter for sensing pressure. The gas pressure sensitivity was amplified from 4 nm/MPa of single FPI to 45.76 nm/MPa of paralleled FPIs with an amplification factor of 11.44 and a linearity of 99.9%. Compared with the traditional fiber gas pressure sensors, the proposed sensor showed great advantages in sensitivity, mechanical strength, cost, and temperature influence resistant, which has potential in adverse-circumstance gas pressure sensing.

scholarly journals Diaphragm-Free Fiber-Optic Fabry-Perot Interferometric Gas Pressure Sensor for High Temperature Application

Sensors ◽  
2018 ◽  
Vol 18 (4) ◽  
pp. 1011 ◽  
Author(s):  
Hao Liang ◽  
Pinggang Jia ◽  
Jia Liu ◽  
Guocheng Fang ◽  
Zhe Li ◽  
...  
Keyword(s):  
High Temperature ◽  
Pressure Sensor ◽  
Fiber Optic ◽  
Gas Pressure ◽  
High Temperature Application ◽  
Fabry Perot ◽  
Temperature Application

scholarly journals Remote Gas Pressure Sensor Based on Fiber Ring Laser Embedded With Fabry–Pérot Interferometer and Sagnac Loop

2016 ◽  
Vol 8 (5) ◽  
pp. 1-8 ◽  
Author(s):  
Jia Shi ◽  
Yuye Wang ◽  
Degang Xu ◽  
Yixin He ◽  
Junfeng Jiang ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Ring Laser ◽  
Gas Pressure ◽  
Fiber Ring Laser ◽  
Fiber Ring ◽  
Fabry Perot

A diaphragm-free fiber Fabry-Perot gas pressure sensor

2019 ◽  
Vol 90 (2) ◽  
pp. 025005 ◽  
Author(s):  
L. Zhang ◽  
Y. Jiang ◽  
H. Gao ◽  
J. Jia ◽  
Y. Cui ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
Gas Pressure ◽  
Fabry Perot

High-Sensitivity Gas Pressure Fabry–Perot Fiber Probe With Micro-Channel Based on Vernier Effect

2019 ◽  
Vol 37 (14) ◽  
pp. 3444-3451 ◽  
Author(s):  
Zhe Li ◽  
Yan-Xin Zhang ◽  
Wei-Gang Zhang ◽  
Ling-Xin Kong ◽  
Tie-Yi Yan ◽  
...  
Keyword(s):  
High Sensitivity ◽  
Gas Pressure ◽  
Micro Channel ◽  
Fiber Probe ◽  
Fabry Perot ◽  
Vernier Effect

Scale Effects in the High Temperature Gas Pressure Forming of Electrodeposited Fine-Grained Copper Thin Sheet

2007 ◽  
Vol 551-552 ◽  
pp. 347-353
Author(s):  
K. Lei ◽  
Kai Feng Zhang ◽  
M.J. Tong
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
High Temperature ◽  
Scale Effects ◽  
Gas Pressure ◽  
Small Scale ◽  
Fine Grained ◽  
Experimental Values ◽  
High Temperature Gas ◽  
Element Method

Scale effects in the high temperature gas pressure forming of electrodeposited fine-grained copper thin sheets were investigated by a series of tests at various forming temperatures and die apertures. The average as-deposited copper grain size was 5 μm. The geometrical parameters of the bugling die system and the thickness of copper sheet varied in proportion. Different radius hemisphere parts from 0.5mm to 5mm were obtained at a strain rate of 5.0×10−4 s−1, which was controlled by pressure forces curves determined in terms of a finite element method (FEM) based on constitutive equation proposed by Backoften in 1964. The experimental relative bulging height (RBH) values were measured, and compared with that predicted by the same finite element method (FEM). It was found that the experimental values of large scale parts approach to simulated values, whereas the experimental values of small scale parts were quite different from simulated values. In order to explain these phenomena, a grain-rotation-weakened mechanism was proposed.

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