Fringe generation with non-uniformly coated long-period fiber gratings
Fecha
2007Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión publicada / Argitaratu den bertsioa
Impacto
|
10.1364/OE.15.009326
Resumen
In this work, the spectral characteristics of non-uniform
symmetrically ring shaped coatings deposited on long-period fiber gratings
(LPFGs) have been theoretically and experimentally investigated. To
optimize the structure performances, the device was designed with a
simulation tool based on vectorial analysis of modes in a multilayer
cylindrical waveguide and coupled mode theory. Electrost ...
[++]
In this work, the spectral characteristics of non-uniform
symmetrically ring shaped coatings deposited on long-period fiber gratings
(LPFGs) have been theoretically and experimentally investigated. To
optimize the structure performances, the device was designed with a
simulation tool based on vectorial analysis of modes in a multilayer
cylindrical waveguide and coupled mode theory. Electrostatic selfassembling
technique was selected to deposit with fine control uniform
azimuthally symmetric coatings on the cladding of the LPFG. UV laser
micromachining operating at 193nm was used to selectively remove the
coating with high spatial resolution and with azimuthal symmetry. By
locally and selectively removing portions of the overlay surrounding the
LPFG from the middle of the grating, strong modifications of its spectral
characteristics were observed. Phase-shift effects and multiple interference
fringes have been observed for all the attenuation bands, strongly depending
on the length of the uncoated region and the overlay features (thickness and
optical properties). This provides a valid technological platform for the
development of advanced photonic devices for sensing and
telecommunication applications. [--]
Materias
Gratings,
Fiber optics sensors,
Filters,
Excimer lasers,
Electromagnetic theory,
Deposition and fabrication
Editor
Optical Society of America
Publicado en
Optics Express Vol. 15, Issue 15, pp. 9326-9340 (2007)
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila
Versión del editor
Entidades Financiadoras
This work was supported by Spanish Ministerio de Educacion y Ciencia and FEDER
Research Grants CICYT-TIC 2004-05936-C02-01/MIC and TEC 2006-12170/MIC.