Extremely Large Group-Velocity Dispersion of Line-Defect Waveguides in Photonic Crystal Slabs
Top Cited Papers
Open Access
- 30 November 2001
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 87 (25), 253902
- https://doi.org/10.1103/physrevlett.87.253902
Abstract
We reveal experimentally waveguiding characteristics and group-velocity dispersion of line defects in photonic crystal slabs as a function of defect widths. The defects have waveguiding modes with two types of cutoff within the photonic band gap. Interference measurements show that they exhibit extraordinarily large group dispersion, and we found waveguiding modes whose traveling speed is 2 orders of magnitude slower than that in air. These characteristics can be tuned by controlling the defect width, and the results agree well with theoretical calculations, indicating that we can design light paths with made-to-order dispersion.Keywords
This publication has 14 references indexed in Scilit:
- Confined Band Gap in an Air-Bridge Type of Two-Dimensional AlGaAs Photonic CrystalPhysical Review Letters, 2001
- Three-dimensional control of light in a two-dimensional photonic crystal slabNature, 2000
- Waveguiding in planar photonic crystalsApplied Physics Letters, 2000
- Demonstration of highly efficient waveguiding in a photonic crystal slab at the 15-µm wavelengthOptics Letters, 2000
- Observation of light propagation in photonic crystal optical waveguides with bendsElectronics Letters, 1999
- Experimental measurement of group velocity dispersion in photonic crystal fibreElectronics Letters, 1999
- Photonic crystals: putting a new twist on lightNature, 1997
- High Transmission through Sharp Bends in Photonic Crystal WaveguidesPhysical Review Letters, 1996
- Two-dimensional photonic-bandgap structures operating at near-infrared wavelengthsNature, 1996
- Inhibited Spontaneous Emission in Solid-State Physics and ElectronicsPhysical Review Letters, 1987