Experimental demonstration of high coupling efficiency between wide ridge waveguides and single-mode photonic Crystal waveguides

Author

Sanchis, P. ; Garcia, J. ; Marti, J. ; Bogaerts, W. ; Dumon, P. ; Taillaert, D. ; Baets, R. ; Wiaux, V. ; Wouters, J. ; Beckx, S.

Author_Institution

Fiber-Radio Group, Univ. Politecnica de Valencia, Spain

Volume

16

Issue

10

fYear

2004

Firstpage

2272

Lastpage

2274

Abstract

The experimental demonstration of a high efficiency coupling technique based on setting a single defect within a photonic crystal (PhC) taper is reported. The samples were fabricated on a Silicon-on-insulator substrate and a 3-μm-wide ridge waveguide was used to couple the light into and out of a single-mode PhC waveguide. Transmission efficiencies higher than 70% for wavelengths at 1.55 μm are demonstrated which sharply improves the transmission efficiency achieved with butt-coupling and conventional PhC tapers.

Keywords

integrated optics; optical couplers; optical losses; optical waveguides; photonic crystals; ridge waveguides; Si; butt-coupling; coupling efficiency; coupling losses; coupling techniques; photonic crystal taper; photonic crystal waveguides; photonic integrated circuits; ridge waveguide; silicon-on-insulator substrate; single-mode waveguides; wide ridge waveguides; Coupling circuits; Degradation; Dielectric substrates; Lattices; Nanophotonics; Optical coupling; Optical losses; Photonic crystals; Photonic integrated circuits; Silicon on insulator technology;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2004.833915

Filename

1336900