Diffraction efficiency and guided light control by two-dimensional photonic-bandgap lattices

Author

Labilloy, D. ; Benisty, H. ; Weisbuch, C. ; Krauss, T.F. ; Cassagne, D. ; Jouanin, C. ; Houdre, R. ; Oesterle, U. ; Bardinal, V.

Author_Institution

Lab. de Phys. de la Matiere Condensee, Ecole Polytech., Palaiseau, France

Volume

35

Issue

7

fYear

1999

fDate

7/1/1999 12:00:00 AM

Firstpage

1045

Lastpage

1052

Abstract

We report on the measurement of the diffraction efficiency of two-dimensional photonic-bandgap lattices consisting of a triangular array of circular air holes etched in a semiconductor waveguide. We use the spontaneous emission of the material as an internal point source. Combined with previous reflectivity and transmission measurements, the diffraction data allow us to assess the total amount of out-of-plane losses experienced by a guided wave traversing the dielectric lattice, as a function of the lattice pitch. We found that these losses are particularly weak for some range of parameters, especially in the photonic bandgap of interest. We discuss the reasons why they can be substantial with other parameters

Keywords

light diffraction; optical arrays; optical losses; optical waveguides; photonic band gap; reflectivity; 2D photonic-bandgap lattices; circular air holes; dielectric lattice; diffraction data; diffraction efficiency; guided light control; guided wave; internal point source; lattice pitch; out-of-plane losses; reflectivity measurements; semiconductor waveguide; spontaneous emission; transmission measurements; triangular array; Dielectric loss measurement; Dielectric materials; Diffraction; Etching; Lattices; Lighting control; Optical losses; Semiconductor materials; Semiconductor waveguides; Spontaneous emission;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.772174

Filename

772174