Negative refraction in a Si-polymer photonic Crystal membrane

Author

Schonbrun, Ethan ; Tinker, Mark ; Park, Wounjhang ; Lee, Jeong-Bong

Author_Institution

Electr. Eng. Dept., Univ. of Colorado, Boulder, CO, USA

Volume

17

Issue

6

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

1196

Lastpage

1198

Abstract

We have observed negative refraction in a photonic crystal (PC) membrane structure at near-infrared wavelengths. The device is fabricated on a silicon-on-insulator substrate and consists of a silicon rod matrix suspended in a polymer where optical energy is delivered by ridge waveguides with various incident angles. The propagation direction inside the PC shows extraordinary refraction with an angle consistent with our two-dimensional numerical simulations. To our knowledge, this is the first experimental observation of isotropic negative refraction in a Si-based planar PC structure at optical frequencies. The realization of negative refraction in a planar Si-based system enables applications in negative index imaging to be integrated into compact optical circuits.

Keywords

infrared spectra; membranes; optical polymers; optical waveguides; photonic crystals; refractive index; ridge waveguides; silicon; Si; Si-based system; Si-polymer membrane; compact optical circuits; device fabrication; near-infrared wavelengths; negative index imaging; negative refraction; optical energy; optical frequencies; photonic crystal membrane; planar photonic crystal structure; propagation direction; ridge waveguides; silicon rod matrix; silicon-on-insulator substrate; suspension; two-dimensional numerical simulations; Biomembranes; Numerical simulation; Optical devices; Optical polymers; Optical propagation; Optical refraction; Optical waveguides; Photonic crystals; Silicon on insulator technology; Transmission line matrix methods; Integrated optics; negative refraction; photonic crystal (PC);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2005.846477

Filename

1432774