Title :
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
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;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2009.2021488
