High sensitivity liquid level sensor based on a hollow core fiber structure

Bao，Lifeng1,2,3; Dong，Xinyong1,4; Shum，Perry Ping2,3,5; Shen，Changyu1

2021-11-15

10.1016/j.optcom.2021.127279

OPTICS COMMUNICATIONS   影响因子和分区

0030-4018

1873-0310

A high sensitivity liquid level sensor formed by using a 15-mm-long hollow core fiber sandwiched between two single mode fibers is proposed and experimentally demonstrated. The sensing principle bases on the leakage of resonant light propagating in cladding of the hollow core fiber when the sensor is partially immersed in the measured liquid in a horizontal manner. High sensitivity of 7.64 and 9.74 dB/mm are achieved for liquid level measurements of water and ethanol, respectively. The maximum measurement range is 2.2 mm for water, which is limited but much larger than diameter of the fiber due to the effect of liquid surface tension. The high sensitivity property makes the proposed sensor a potential candidate for discrete liquid level measurement, especially for some flammable and explosive liquids.

Anti-resonant reflecting guidance Hollow core fibers Liquid level sensors

SCI ; EI

英语

其他

National Natural Science Foundation of China[61775204,61640408,11874332] ; National Major Scientific Research Instrument Devel-opment Project of Natural Science Foundation of China[61727816]

Optics

Optics

WOS:000685966600003

ELSEVIER

20212810636059

Level measurement ; Single mode fibers

Fiber Optics:741.1.2 ; Mechanical Variables Measurements:943.2

PHYSICS

2-s2.0-85109714311

Scopus

1.Institute of Optoelectronic Technology,China Jiliang University,Hangzhou,310018,China
2.School of Electrical and Electronic Engineering,Nanyang Technological University,Singapore,639798,Singapore
3.CINTRA,CNRS/NTU/Thales,Singapore,637553,Singapore
4.School of Information Engineering,Guangdong University of Technology,Guangzhou,510006,China
5.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Bao，Lifeng,Dong，Xinyong,Shum，Perry Ping,et al. High sensitivity liquid level sensor based on a hollow core fiber structure[J]. OPTICS COMMUNICATIONS,2021,499.

Bao，Lifeng,Dong，Xinyong,Shum，Perry Ping,&Shen，Changyu.(2021).High sensitivity liquid level sensor based on a hollow core fiber structure.OPTICS COMMUNICATIONS,499.

Bao，Lifeng,et al."High sensitivity liquid level sensor based on a hollow core fiber structure".OPTICS COMMUNICATIONS 499(2021).