Sensitivity optimization with cladding-etched long period fiber gratings at the dispersion turning point

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Date
2016Author
Version
Acceso abierto / Sarbide irekia
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Artículo / Artikulua
Version
Versión publicada / Argitaratu den bertsioa
Project Identifier
ES/1PE/TEC2013-43679-R ES/1PE/TEC2013-46643
Impact
|
10.1364/OE.24.017680
Abstract
This work presents a refractive index sensor based on a long period fiber grating
(LPFG) made in a reduced cladding fiber whose low order cladding modes have the turning
point at large wavelengths. The combination of these parameters results in an improved
sensitivity of 8734 nm/refractive index unit (RIU) for the LP0,3 mode in the 1400-1650
wavelength range. This value is similar to that obt ...
[++]
This work presents a refractive index sensor based on a long period fiber grating
(LPFG) made in a reduced cladding fiber whose low order cladding modes have the turning
point at large wavelengths. The combination of these parameters results in an improved
sensitivity of 8734 nm/refractive index unit (RIU) for the LP0,3 mode in the 1400-1650
wavelength range. This value is similar to that obtained with thin-film coated LPFGs, which
permits to avoid the coating deposition step. The numerical simulations are in agreement with
the experimental results. [--]
Publisher
Optical Society of America
Published in
Optics Express, Vol. 24, Issue 16, pp. 17680-17685 (2016)
Departament
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektriko eta Elektronikoa Saila /
Universidad Pública de Navarra / Nafarroako Unibertsitate Publikoa. ISC - Institute of Smart Cities
Publisher version
Sponsorship
This work was supported in part by the Spanish Ministry of Education and Science-FEDER
TEC2013-43679-R. J.L. Cruz also acknowledges financial support of project TEC2013-46643-C2-1-R, and the Generalitat Valenciana project PROMETEOII/2014/072.