Nanophotonic Sensor Based on Photonic Crystal Structure Using Negative Refraction for Effective Light Coupling

Author

Ouerghi, F. ; AbdelMalek, F. ; Haxha, S. ; Abid, R. ; Mejatty, H. ; Dayoub, I.

Author_Institution

Dept. of Phys., Fac. of Sci. of Tunis, Tunis, Tunisia

Volume

27

Issue

15

fYear

2009

Firstpage

3269

Lastpage

3274

Abstract

In this paper, using the 2-D finite-difference time-domain (FDTD) method, we study a novel biosensor based on collimation effects in photonic crystals (PCs) with negative refractive index. Coupling the collimated beam to a line of air holes (sensing region) filled with normal air, dry air, liquid, and gas is thoroughly investigated. It is shown that by an appropriate selection of design parameters, such as, the air cylinder radii and coupling distance, it is possible to achieve ultracompact sensing platforms. The collimation effect features channel allocation in nanosystems and high sensitivity for biomolecules sensing applications.

Keywords

biosensors; finite difference time-domain analysis; integrated optics; nanophotonics; nanosensors; optical collimators; optical materials; photonic crystals; refractive index; 2D finite difference time domain method; biomolecule sensing; biosensor; channel allocation; collimation effects; effective light coupling; nanophotonic sensor; negative refractive index; photonic crystal structure; ultracompact sensing platform; Biosensor; finite-difference time-domain; negative refraction; photonic crystals;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2009.2021488

Filename

4907055