Modeling the Response of a Long-Period Fiber Grating to Ambient Refractive Index Change in Chemical Sensing Applications

Author

Hochreiner, Hannes ; Cada, Michael ; Wentzell, Peter D.

Author_Institution

Dept. of Chem., Dalhousie Univ., Halifax, NS

Volume

26

Issue

13

fYear

2008

fDate

7/1/2008 12:00:00 AM

Firstpage

1986

Lastpage

1992

Abstract

The transmittance spectra of a long-period fiber grating element immersed in different mixtures of water and dimethyl sulfoxide were recorded. The obtained data were compared with a theoretical model based on linearly polarized modes treated with a coupled-mode approach. Excellent agreement between the measurements and theoretical results was found over a wide wavelength range.

Keywords

chemical sensors; coupled mode analysis; diffraction gratings; fibre optic sensors; liquid mixtures; optical fibre polarisation; refractive index measurement; spectrochemical analysis; ambient refractive index change; chemical sensing; coupled-mode theory; linearly polarized modes; long-period fiber grating element; transmittance spectra; water-dimethyl sulfoxide mixtures; Chemical elements; Chemical sensors; Fiber gratings; Optical fiber communication; Optical fiber polarization; Optical fiber sensors; Optical sensors; Refractive index; Remote monitoring; Temperature sensors; Coupled mode theory; long-period gratings; refractive index;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2007.912022

Filename

4608863