Optical Fiber Sensing of Salinity and Liquid Level

Author

Hang-Zhou Yang ; Xue-Guang Qiao ; Kok-Sing Lim ; Harun, Sulaiman Wadi ; Wu-Yi Chong ; Islam, Md Rafiqul ; Ahmad, Harith

Author_Institution

Sch. of Phys., Northwest Univ., Xi´an, China

Volume

26

Issue

17

fYear

2014

fDate

Sept.1, 1 2014

Firstpage

1742

Lastpage

1745

Abstract

This letter reports a fiber optic sensing technology for the detection of salinity and liquid level of a given solution. The operation principle is based on the displacement measurement in a large measuring range by generating a variety of outputs for various sensing objectives. The proposed sensor is investigated analytically and experimentally. The achieved salinity sensitivity is 8.589/%, in addition, the proposed sensor exhibits an excellent liquid level sensitivity of 0.4421/mm in the experiment.

Keywords

displacement measurement; fibre optic sensors; displacement measurement; fiber optic sensing technology; liquid level detection; liquid level sensitivity; operation principle; optical fiber sensing; salinity detection; salinity sensitivity; sensing objectives; Liquids; Mirrors; Optical fiber sensors; Optical fibers; Probes; Sensitivity; Fiber optic displacement sensor; intensity modulation; plastic optical fiber; refractometer;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2014.2330206

Filename

6832571