Thin fiber-based Mach–Zehnder interferometric sensor for measurement of liquid level, refractive index, temperature, and axial strain

2020 ◽  
Vol 59 (6) ◽  
pp. 1786 ◽  
Author(s):  
Wei Liu ◽  
Xuqiang Wu ◽  
Gang Zhang ◽  
Shili Li ◽  
Cheng Zuo ◽  
...  
Keyword(s):  
Refractive Index ◽  
Axial Strain ◽  
Liquid Level ◽  
Thin Fiber ◽  
Interferometric Sensor

Three-parameter sensing of liquid level–refractive index–temperature (LRT) based on micro/nanofiber coupling ring (MFCR)

2021 ◽  
Vol 64 ◽  
pp. 102578
Author(s):  
Zenghui Wang ◽  
Lianqin Li ◽  
Qianqian Ma ◽  
Mengjiao Wang ◽  
Qiong Wu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Liquid Level

scholarly journals Doped Nanocrystalline Diamond Films as Reflective Layers for Fiber-Optic Sensors of Refractive Index of Liquids

Materials ◽  
2019 ◽  
Vol 12 (13) ◽  
pp. 2124 ◽  
Author(s):  
Monika Kosowska ◽  
Daria Majchrowicz ◽  
Kamatchi J. Sankaran ◽  
Mateusz Ficek ◽  
Ken Haenen ◽  
...  
Keyword(s):  
Refractive Index ◽  
Fiber Optic ◽  
Microwave Plasma ◽  
Diamond Films ◽  
Chemical Vapor ◽  
Fiber Optic Sensors ◽  
Nanocrystalline Diamond ◽  
Silicon Substrates ◽  
Boron Doped ◽  
Interferometric Sensor

This paper reports the application of doped nanocrystalline diamond (NCD) films—nitrogen-doped NCD and boron-doped NCD—as reflective surfaces in an interferometric sensor of refractive index dedicated to the measurements of liquids. The sensor is constructed as a Fabry–Pérot interferometer, working in the reflective mode. The diamond films were deposited on silicon substrates by a microwave plasma enhanced chemical vapor deposition system. The measurements of refractive indices of liquids were carried out in the range of 1.3 to 1.6. The results of initial investigations show that doped NCD films can be successfully used in fiber-optic sensors of refractive index providing linear work characteristics. Their application can prolong the lifespan of the measurement head and open the way to measure biomedical samples and aggressive chemicals.

Simultaneous measurement for liquid level and refractive index based on all-fiber modal interferometer

2013 ◽  
Vol 60 (6) ◽  
pp. 496-502 ◽  
Author(s):  
Yi Dai ◽  
Sisi Tan ◽  
Qizhen Sun ◽  
Jianghai Wo ◽  
Zhilin Xu ◽  
...  
Keyword(s):  
Refractive Index ◽  
Simultaneous Measurement ◽  
Liquid Level
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