Title :
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
fDate :
7/1/2008 12:00:00 AM
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;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2007.912022
