Inline Liquid Concentration Measurement in Nanoliter Volume Using Fiber-Optic Low-Coherence Interferometry

Author

Tomic, Milos C. ; Djinovic, Zoran V.

Author_Institution

Inst. Bezbednosti, Belgrade

Volume

8

Issue

5

fYear

2008

fDate

5/1/2008 12:00:00 AM

Firstpage

587

Lastpage

592

Abstract

A method for inline measurement of composition of binary liquid mixture in a nanoliter volume is presented. Low-coherence interferometric technique, based on fiber-optic Mach-Zehnder interferometer, is applied for measuring the liquid refraction index, from which its volume fractions are found. The accuracy of volume fractions measurement, of about , was predominantly determined by the accuracy of reading the position of mechanical scanner. The data rate of about 1.5 Hz was also limited by mechanical scanning.

Keywords

Mach-Zehnder interferometers; chemical variables measurement; fibre optic sensors; refractive index; binary liquid mixture; fiber-optic Mach-Zehnder interferometer; fiber-optic low-coherence interferometry; inline liquid concentration measurement; liquid refraction index; mechanical scanner; nanoliter volume; volume fractions; Biomedical optical imaging; Chemical engineering; Chemistry; Methanol; Nanobioscience; Optical interferometry; Optical refraction; Optical sensors; Spectroscopy; Volume measurement; Concentration measurement; fiber-optic sensor; low-coherence interferometry; nanoliter volume;

fLanguage

English

Journal_Title

Sensors Journal, IEEE

Publisher

ieee

ISSN

1530-437X

Type

jour

DOI

10.1109/JSEN.2008.918700

Filename

4529157