Utilization of NI PXIe-4844 interrogator for high resolution fiber extrinsic Fabry-Perot interferometric sensing

Author

Ushakov, Nikolai ; Liokumovich, Leonid ; Medvedev, Andrei

Author_Institution

Dept. of Radiophys., St. Petersburg State Polytech. Univ., St. Petersburg, Russia

fYear

2015

fDate

21-23 May 2015

Firstpage

1

Lastpage

4

Abstract

An advanced method of fiber extrinsic Fabry-Perot interferometer (EFPI) optical path difference (OPD) measurement with the use of the interrogator NI PXIe-4844 was applied for high precision distance, pressure and temperature measurements with resolutions up to 14 pm, 0.2 Pa and 2 mK respectively. Sub-nanometer resolution in multiplexed schemes was attained with single interrogating channel: from 30 to 80 pm for serial scheme with three sensors and from 40 to 200 pm for parallel scheme with four sensors. An ability to register the oscillating signals with frequencies up to 1000 Hz was demonstrated.

Keywords

Fabry-Perot interferometers; fibre optic sensors; NI PXIe-4844 interrogator; high resolution fiber extrinsic Fabry-Perot interferometric sensing; multiplexed schemes; optical path difference; serial scheme; single interrogating channel:; sub-nanometer resolution; Optical fiber sensors; Optical fibers; Optical interferometry; Optical variables measurement; Wavelength measurement; EFPI; displacement measurement; extrinsic Fabry-Perot interferometer; fiber optic sensor; multiplexing; pressure measurement; signal processing; spectral interferometery; spectral measurements; temperature measurement; tunable laser; wavelength scanning interferometry;

fLanguage

English

Publisher

ieee

Conference_Titel

Control and Communications (SIBCON), 2015 International Siberian Conference on

Conference_Location

Omsk

Print_ISBN

978-1-4799-7102-2

Type

conf

DOI

10.1109/SIBCON.2015.7147302

Filename

7147302