1. Waveguide cores containing silicon nanocrystals as active spectral filters for silicon-based photonics
- Author
-
K. Luterová, Tomáš Mates, Ivan Pelant, T. Ostatnický, E. Skopalová, Robert Elliman, Jan Valenta, Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université Louis Pasteur - Strasbourg I-Centre National de la Recherche Scientifique (CNRS), and Masson, Beatrice
- Subjects
Quantum optics ,Materials science ,Optical fiber ,Physics and Astronomy (miscellaneous) ,Silicon ,business.industry ,General Engineering ,Physics::Optics ,General Physics and Astronomy ,chemistry.chemical_element ,Waveguide (optics) ,law.invention ,Optics ,Planar ,chemistry ,law ,Optical cavity ,Spontaneous emission ,Photonics ,business - Abstract
Layers of densely packed luminescent Si nanocrystals embedded in fused silica act as wavelength-specific planar waveguides that filter the wide-band spontaneous emission. The waveguides’ light output consists of two spectrally narrow (∼10 nm), orthogonally polarized, and spatially directed bands. This effect is shown to result from leaky modes of the lossy waveguides. The results have general applicability to lossy, asymmetric waveguides and show the way to produce spectrally narrow emission without the use of optical cavities.
- Published
- 2006