Separation of photonic crystal waveguides modes using femtosecond time-of-flight
- 12 November 2002
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 81 (21) , 3927-3929
- https://doi.org/10.1063/1.1520709
Abstract
We demonstrate that ultrabroadband ultrashort-pulse white light supercontinua can be used to track the group velocity of photons in optical waveguides using a Kerr gate technique. Results on silicon nitride slab waveguides show both polarization birefringence and multimode dispersion, which vanish at critical wavelengths. When photonic crystals are embedded in the waveguides, the higher order modes are excited within the band-gap region, demonstrating the need to control their dispersion to make effective use of photonic crystal waveguide devices.Keywords
This publication has 20 references indexed in Scilit:
- Observation of small group velocity in two-dimensional AlGaAs-based photonic crystal slabsPhysical Review B, 2002
- Experimental and theoretical confirmation of Bloch-mode light propagation in planar photonic crystal waveguidesApplied Physics Letters, 2002
- Direct measurement of the quality factor in a two-dimensional photonic-crystal microcavityOptics Letters, 2001
- Extremely Large Group-Velocity Dispersion of Line-Defect Waveguides in Photonic Crystal SlabsPhysical Review Letters, 2001
- Terahertz wave dispersion in two-dimensional photonic crystalsPhysical Review B, 2001
- Time-resolved luminescence spectroscopy by the optical Kerr-gate method applicable to ultrafast relaxation processesPhysical Review B, 2000
- Efficient optical Kerr shutter for femtosecond time-resolved luminescence spectroscopyReview of Scientific Instruments, 2000
- Visible photonic band gap engineering in silicon nitride waveguidesApplied Physics Letters, 2000
- Large Dispersive Effects near the Band Edges of Photonic CrystalsPhysical Review Letters, 1999
- Two-Dimensional Photonic Band-Gap Defect Mode LaserScience, 1999