3D photonic crystals : Design and simulation

Author

Cimpulungeanu, Catalin ; Kusko, Mihai ; Kusko, Cristian ; Cristea, Dana ; Schiopu, Paul

Author_Institution

Nat. R&D Inst. in Microtechnol., Bucharest

Volume

2

fYear

2008

fDate

13-15 Oct. 2008

Firstpage

437

Lastpage

440

Abstract

We designed and simulated a photonic crystal realized on silicon on insulator(SOI) layers. The obtained bandgap is centered on the wavelength of 1.55 mum, the spectral region for todaypsilas optical communications. We designed two types of waveguides (tapered and straight) that contain the photonic crystal, and these are to be implemented on SOI wafers. The photonic crystals consists in a square or hexagonal lattice of holes configured in a high refractive index layer deposited on silicon oxide. By using a combination of plane wave expansion (PWE) and finite difference time domain (FDTD) methods we have determined the bandgap of the structure and we have computed the transmission and reflection properties of the system. Using FDTD simulations, we have put in evidence the subwavelength confinement in a waveguide consisting in a line defects realized in the photonic crystal.

Keywords

finite difference time-domain analysis; integrated optics; optical waveguides; photonic crystals; silicon-on-insulator; FDTD; SOI wafer; finite difference time domain method; hexagonal lattice; high refractive index layer; photonic crystals; plane wave expansion; silicon-on-insulator layers; square lattice; subwavelength confinement; wavelength 1.55 mum; Finite difference methods; Insulation; Lattices; Optical fiber communication; Optical waveguides; Photonic band gap; Photonic crystals; Refractive index; Silicon on insulator technology; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Semiconductor Conference, 2008. CAS 2008. International

Conference_Location

Sinaia

ISSN

1545-827X

Print_ISBN

978-1-4244-2004-9

Type

conf

DOI

10.1109/SMICND.2008.4703449

Filename

4703449