Nanodeposition of materials with complex refractive index in long period fiber gratings
Fecha
2005Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Impacto
|
10.1109/JLT.2005.858246
Resumen
An overlay of higher refractive index than the
cladding is deposited on a Long Period Fiber Grating (LPFG).
This permits to improve in a great manner the sensitivity of the
device to ambient and overlay refractive index changes. This
causes large shifts of the attenuation bands in the transmission
spectrum. To obtain a maximum sensitivity for specific refractive
indices of the overlay and t ...
[++]
An overlay of higher refractive index than the
cladding is deposited on a Long Period Fiber Grating (LPFG).
This permits to improve in a great manner the sensitivity of the
device to ambient and overlay refractive index changes. This
causes large shifts of the attenuation bands in the transmission
spectrum. To obtain a maximum sensitivity for specific refractive
indices of the overlay and the ambient, an optimum overlay
thickness must be selected. If the refractive index of the overlay is
complex there is an additional phenomenon of vanishing of the
attenuation bands in the transmission spectrum. This occurs for
specific thickness values of the overlay. The problem is analyzed
with a numerical method based on LP mode approximation and
coupled mode theory. Experimental results are contrasted with
theoretical ones [--]
Materias
Coupled mode analysis,
Long period gratings,
Optical fiber sensors,
Refractive index,
Nanodeposition
Editor
IEEE
Publicado en
Journal of Lightwave Technology, vol. 23, no. 12, Dec. 2005
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 CICYT Research Grant TIC 2003-00909, Gobierno de Navarra and
FPU MECD grant.