High-sensitivity hydraulic pressure sensor realized with PDMS film-based Fabry-Perot interferometer

2019 ◽  
Author(s):  
Leyi Hou ◽  
Ben Xu ◽  
Chun-Liu Zhao ◽  
Huifang Chen ◽  
Xinyong Dong ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
High Sensitivity ◽  
Hydraulic Pressure ◽  
Pdms Film ◽  
Fabry Perot

High-sensitivity hydraulic pressure sensor based on Fabry-Perot interferometer filled with polydimethylsiloxane film

2019 ◽  
Vol 90 (9) ◽  
pp. 095002 ◽  
Author(s):  
Chunliu Zhao ◽  
Leyi Hou ◽  
Juan Kang ◽  
Bangning Mao ◽  
Changyu Shen ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
High Sensitivity ◽  
Hydraulic Pressure ◽  
Fabry Perot

High-sensitivity Fabry–Perot interferometric pressure sensor based on a nanothick silver diaphragm

2012 ◽  
Vol 37 (2) ◽  
pp. 133 ◽  
Author(s):  
Feng Xu ◽  
Dongxu Ren ◽  
Xiaolong Shi ◽  
Can Li ◽  
Weiwei Lu ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
High Sensitivity ◽  
Fabry Perot

scholarly journals A High Precision Fiber Optic Fabry–Perot Pressure Sensor Based on AB Epoxy Adhesive Film

Photonics ◽  
2021 ◽  
Vol 8 (12) ◽  
pp. 581
Author(s):  
Yanan Zhang ◽  
Shubin Zhang ◽  
Haitao Gao ◽  
Danping Xu ◽  
Zhuozhen Gao ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
High Sensitivity ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Epoxy Adhesive ◽  
Curing Time ◽  
Adhesive Film ◽  
Interference Spectrum ◽  
Fabry Perot ◽  
Potential Applications

This paper proposes a Fabry–Perot pressure sensor based on AB epoxy adhesive with ultra-high sensitivity under low pressure. Fabry–Perot interference, located between single-mode fiber (SMF) and hollow-core fiber (HCF), is an ultra-thin AB epoxy film formed by capillary action. Then the thick HCF was used to fix the HCF and SMF at both ends with AB epoxy adhesive. Experimental results show that when the thickness of AB epoxy film is 8.74 μm, and the cavity length is 30 μm, the sensor has the highest sensitivity. The sensitivity is 257.79 nm/MPa within the pressure range of 0–70 kPa. It also investigated the influence of the curing time of AB epoxy on the interference spectrum. Experiments showed that the interference spectrum peak is blue-shifted with the increase of curing time. Our study also demonstrated the humidity stability of this pressure sensor. These characteristics mean that our sensor has potential applications in the biomedical field and ocean exploration.

High-Sensitivity Gas-Pressure Sensor Based on Fiber-Tip PVC Diaphragm Fabry–Pérot Interferometer

2017 ◽  
Vol 35 (18) ◽  
pp. 4067-4071 ◽  
Author(s):  
Zhe Zhang ◽  
Changrui Liao ◽  
Jian Tang ◽  
Zhiyong Bai ◽  
Kuikui Guo ◽  
...  
Keyword(s):  
Pressure Sensor ◽  
High Sensitivity ◽  
Gas Pressure ◽  
Fabry Perot

Theoretical Analysis of a New Intrinsic Fabry-Perot Interferometric Fiber Pressure Sensor Structure

2013 ◽  
Vol 331 ◽  
pp. 303-306
Author(s):  
Ning Wang ◽  
Jian Bo Fu ◽  
Xiao Xia Li
Keyword(s):  
Pressure Sensor ◽  
Fiber Diameter ◽  
High Sensitivity ◽  
Single Mode ◽  
Pressure Sensitivity ◽  
Response Curves ◽  
Multimode Fibers ◽  
Sensor Structure ◽  
Fabry Perot ◽  
Different Diameters

The theoretical model is got for a new intrinsic Fabry-Perot interferometric fiber pressure sensor structure fabricated by single mode and multimode fibers with different diameters. The pressure response curves are simulated by Matlab software. The analysis results showed that the pressure sensitivity decreased with the diameter of multimode fiber increased at some area, but the sensitivity begins to increase when the diameter value is more than critical point. The high sensitivity can be still got by increasing fiber diameter.

scholarly journals An Optimized PDMS Thin Film Immersed Fabry-Perot Fiber Optic Pressure Sensor for Sensitivity Enhancement

Coatings ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 290 ◽  
Author(s):  
Cheng Luo ◽  
Xiangnan Liu ◽  
Jinrong Liu ◽  
Jian Shen ◽  
Hui Li ◽  
...  
Keyword(s):  
Film Thickness ◽  
Pressure Sensor ◽  
Fiber Optic ◽  
Diffusion Rate ◽  
Low Cost ◽  
Viscosity Coefficient ◽  
External Pressure ◽  
Joint Surface ◽  
Pdms Film ◽  
Fabry Perot

To effectively control the critical thickness of a polydimethylsiloxane (PDMS) film and enhance the sensitivity characteristics of the fiber pressure sensor, we propose a new method to optimize the thickness of the PDMS film in a fiber tube. It is characterized by analyzing the relationship between the diffusion rate of the PDMS and its viscosity, and using an oven to solidify the PDMS to a certain extent to accurately control the diffusion rate and diffusion length of the PDMS in the fiber tube. We also used multiple transfer methods to control the volume of the PDMS in the fiber tube to minimize the thickness of the formed PDMS film. Fabry-Perot interference occurs when the surface of the PDMS film layer filled into the fiber tube and the adjacent single mode fiber/fiber tube form a joint surface. This method forms a new fiber-optic Fabry-Perot pressure sensor that is very sensitive to external pressure parameters. The experimental results show that the optimized film thickness will be reduced to an order of 20 μm. Correspondingly, the fiber-optic pressure sensor has a sensitivity of up to 100 pm/kPa, which is about 100 times that reported in the literature. The structure also has better resistance to temperature interference. To our knowledge, this is the first in-depth study of the effects of the PDMS viscosity coefficient, diffusion rate, and fiber pressure sensitivity in fiber. The film thickness optimization method has some advantages, including a low cost, good controllability, and good application value in high sensitivity pressure and sound wave detection.

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