Publication:
Long period fiber grating for biosensing: an improved design methodology to enhance add-layer sensitivity

Date

2018

Authors

Bandyopadhyay, Sankhyabrata
Basumallick, Nandini
Biswas, Palas
Dey, Tanoy Kumar
Bandyopadhyay, Somnath

Director

Publisher

IEEE
Acceso abierto / Sarbide irekia
Artículo / Artikulua
Versión aceptada / Onetsi den bertsioa

Project identifier

ES/1PE/TEC2016-78047-R

Abstract

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.

Description

Keywords

Long period fiber grating, Couple mode theory, Cladding modes, Add-layer sensing, Bio-sensing

Department

Ingeniería Eléctrica y Electrónica / Ingeniaritza Elektrikoa eta Elektronikoa

Faculty/School

Degree

Doctorate program

item.page.cita

S. Bandyopadhyay, I. Del Villar, N. Basumallick, P. Biswas, T. K. Dey and S. Bandyopadhyay, "Long Period Fiber Grating for Biosensing: An Improved Design Methodology to Enhance Add-Layer Sensitivity," in Journal of Lightwave Technology, vol. 36, no. 4, pp. 1178-1184, Feb.15, 15 2018. doi: 10.1109/JLT.2017.2754549

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