High sensitivity gas pressure sensor based on two parallel-connected Fabry–Perot interferometers and Vernier effect

2021 ◽  
Author(s):  
Xiaoshan Guo ◽  
Wenhao Ye ◽  
Chao Jiang ◽  
Simei Sun
Keyword(s):  
Pressure Sensor ◽  
High Sensitivity ◽  
Gas Pressure ◽  
Fabry Perot ◽  
Vernier Effect

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.

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

scholarly journals Cascaded-Cavity Fabry-Perot Interferometric Gas Pressure Sensor based on Vernier Effect

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3677 ◽  
Author(s):  
Peng Chen ◽  
Yutang Dai ◽  
Dongsheng Zhang ◽  
Xiaoyan Wen ◽  
Minghong Yang
Keyword(s):  
Capillary Tube ◽  
High Sensitivity ◽  
Single Mode ◽  
Single Mode Fiber ◽  
Gas Pressure ◽  
Glass Capillary ◽  
Compact Structure ◽  
Fabry Perot ◽  
Fs Laser ◽  
Vernier Effect

An extrinsic Fabry-Perot interferometer (EFPI) composed of double fiber FP cavities in a glass capillary tube to generate Vernier effect has been fabricated and employed for gas pressure sensing. A lead-in single-mode fiber (LSMF) and a reflective single-mode fiber (RSMF) were inserted into the capillary tube to form a FP cavity. Femtosecond (fs) laser was used to ablate openings on a capillary tube for gas passage to the FP cavity. A fusion hole was also drilled on the end face of a SMF by fs laser. The sensitivity of the sensor is enhanced due to Vernier effect. Experimental results show that the sensitivity was as high as 86.64 nm/MPa in the range of 0~0.6 MPa, which is 32.8 times larger than that of an open-cavity EFPI sensor without Vernier effect. The temperature cross-sensitivity of the sensor was measured to be about 5.18 KPa/°C. The proposed sensor was characterized by its high sensitivity, compact structure and ease of fabrication, and would have extensive application prospects in gas sensing fields.

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

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 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

scholarly journals Gas Pressure Sensor Based on BDK-Doped Polymer Optical Fiber

Micromachines ◽  
2019 ◽  
Vol 10 (11) ◽  
pp. 717 ◽  
Author(s):  
Xin Cheng ◽  
Yi Liu ◽  
Changyuan Yu
Keyword(s):  
Optical Fiber ◽  
Pressure Sensor ◽  
Chemical Structure ◽  
High Sensitivity ◽  
Gas Pressure ◽  
Air Pressure ◽  
Response Behavior ◽  
Polymer Optical Fiber ◽  
The Stability ◽  
Doped Polymer

This paper presents a high sensitivity gas pressure sensor with benzyl-dimethylketal (BDK)-doped polymer optical fiber Bragg grating (POFBG), whose sensitivity is up to 8.12 pm/kPa and 12.12 pm/kPa in positive and negative pressure atmosphere, respectively. The high sensitivity can be explained by its porous chemical structure. The stability and response behavior under air pressure atmosphere has also been investigated. The new understanding of the air pressure response principle and sensitivity difference for the presented sensor can be a worthy reference.

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
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