Arc-induced long period fiber gratings in the dispersion turning points
Fecha
2016Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Impacto
|
10.1109/JLT.2016.2540678
Resumen
We demonstrated the possibility to inscribe longperiod
fiber gratings (LPFGs) in a B/Ge codoped fiber by using
grating periods shorter than 150 μm. We also have arc-induced
in the SMF 28 fiber an LPFG in the dispersion turning points by
using a grating period of 197 μm. In previous works, the shortest
periods were, respectively, of the order of 190 and 320 μm for
the same fibers. To achieve ...
[++]
We demonstrated the possibility to inscribe longperiod
fiber gratings (LPFGs) in a B/Ge codoped fiber by using
grating periods shorter than 150 μm. We also have arc-induced
in the SMF 28 fiber an LPFG in the dispersion turning points by
using a grating period of 197 μm. In previous works, the shortest
periods were, respectively, of the order of 190 and 320 μm for
the same fibers. To achieve such a considerable reduction in the
grating periods which enables access to the higher order cladding
modes (higher sensitivity), we have developed a high-voltage power
supply that allows for a constant and stable electric current ranging
from 10.5 up to 21 mA. Computer simulations were used to
identify the cladding mode resonances for each grating inscribed
in the different fibers. The fabricated LPFGs were characterized
as a function of the external refractive index from 1.33 up to 1.42,
and an average refractive index sensitivity of –720 nm/RIU in the
1.33–1.41 range was obtained for a 192-μm LPFG without further
optimization, such as the use of etching or thin films deposition. [--]
Materias
Long-period fiber grating,
Electric arc technique
Editor
IEEE Optical Society of America
Publicado en
Journal of Lightwave Technology, Vol. 34, N. 19, october 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 is financed by the ERDF – European Regional Development Fund through the Operational Programme for Competitiveness and Internationalisation - COMPETE 2020 Programme,
and by National Funds through the FCT –
Fundação para a Ciência e a Tecnologia (Portuguese Foundation for Science and Technology) within project «POCI-01-0145-FEDER-006961»
.