6 research outputs found
Long period fiber grating for biosensing: an improved design methodology to enhance add-layer sensitivity
We present our theoretical study on the design of
LPFG sensor where its add-layer sensitivity is enhanced. addlayer
sensitivity quantifies the sensitivity of the sensor to the
changes taking place within few tens of nanometers around the
receptor molecules. Two different methodologies: the use of dual
overlay layer and tailoring of the intermodal separation between
two cladding modes, have been used to enhance the add-layer
sensitivity. Using coupled mode analysis we compute several
examples to carry out a detailed comparative analysis between
the results obtained, focusing on the cladding mode near mode
transition.This work was supported by Council of Scientific Research (CSIR), India
during the 12th Five Year Plan. Project Nos. ESC-0102 and ESC-0110. The author I. D. Villar thankfully
acknowledge the support of the Spanish Agencia Estatal de Investigación
(AEI) and Fondo Europeo de Desarrollo Regional (FEDER) (TEC2016-78047-R) and the Government of Navarre through the project with reference
2017/PI044
Long period fiber gratings for bio-sensing: An improved design methodology
Long period fiber grating (LPFG) has been actively researched in bio-sensing applications owing to its ability to sense refractive index (RI) of the surrounding medium. We investigate on the adequacy of the present state of the art to quantify adsorption of bio-molecules on the surface of the fiber confined within few tens of nanometers and possible improvements in the design of sensors suitable for bio-sensing applications
Long Period Fiber Grating for Biosensing: An Improved Design Methodology to Enhance Add-Layer Sensitivity
We present our theoretical study on the design of long period fiber grating (LPFG) sensor where its add-layer sensitivity is enhanced. Add-layer sensitivity quantifies the sensitivity of the sensor to the changes taking place within few tens of nanometers around the receptor molecules. Two different methodologies: the use of dual overlay layer and tailoring of the intermodal separation between two cladding modes have been used to enhance the add-layer sensisstivity. Using coupled mode analysis, we compute several examples to carry out a detailed comparative analysis between the results obtained, focusing on the cladding mode near mode transition