Etched LPFGs in reflective configuration for sensitivity and attenuation band depth increase
Fecha
2016Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Impacto
|
10.1109/LPT.2016.2529701
Resumen
A reflection configuration setup for long-period
fiber gratings is presented. It permits to obtain a unique band
with attenuation double than that obtained in transmission
configuration, which is interesting for applications where this
value is reduced (e.g., the mode transition phenomenon). The
method is based on the deposition of a silver mirror at the
end of the optical fiber, which perm ...
[++]
A reflection configuration setup for long-period
fiber gratings is presented. It permits to obtain a unique band
with attenuation double than that obtained in transmission
configuration, which is interesting for applications where this
value is reduced (e.g., the mode transition phenomenon). The
method is based on the deposition of a silver mirror at the
end of the optical fiber, which permits to absorb the power
transmitted through cladding modes and to avoid the generation
of interferometric bands. The method also solves the requirement
of a precise cleave or to polish the end of the grating, a drawback
present in other publications. The versatility of the setup has been
proved by application of the cladding etching technique until
the attenuation band corresponding with the first guided mode
in the cladding is visualized in an optical spectrum analyzer.
The experimental results are supported by the numerical data
obtained with a method based on the exact calculation of core
and cladding modes and the utilization of coupled mode theory [--]
Materias
Optical fiber,
Gratings,
Optical fiber transducers,
Reflection configuration
Editor
IEEE
Publicado en
IEEE Photonics Technology Letters, Vol. 28, No. 10, May 15, 2016
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 in part by
the Spanish Ministry of Education and Science-FEDER TEC2013-43679-R and
TEC2013-46643-C2-1-R.