Precision and sensitivity optimization for white-light interferometric fiber-optic sensors

Author

Tapia-Mercado, J. ; Khomenko, A.V. ; García-Weidner, A.

Author_Institution

Dept. de Opt., Centro de Investigacion Cientifica y de Educ. Superior de Ensenada, Ensenada, Mexico

Volume

19

Issue

1

fYear

2001

fDate

1/1/2001 12:00:00 AM

Firstpage

70

Lastpage

74

Abstract

A detailed analysis for accuracy and sensitivity of fiber-optic sensor based on white-light interferometric technique with wavelength scanning is presented. Analytical equations for optimal optical path difference were obtained, which allow to reach the minimum measurement uncertainty. The results of the analysis can be applied for optimization of any sensor based on low coherence spectrum domain technique, though our experimental validation of analysis has been carried out with the temperature sensor based on the Sagnac interferometer having a twisted high-birefringent fiber as a sensing element

Keywords

birefringence; fibre optic sensors; light interferometers; measurement uncertainty; optimisation; sensitivity; low coherence spectrum domain technique; minimum measurement uncertainty; optimal optical path difference; sensing element; sensitivity optimization; temperature sensor; twisted high-birefringent fiber; wavelength scanning; white-light interferometric fiber-optic sensors; Optical fiber devices; Optical fiber sensors; Optical interferometry; Optical sensors; Optical signal processing; Power generation; Sagnac interferometers; Sensor phenomena and characterization; Signal processing; Temperature sensors;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.914487

Filename

914487