Mapping the optical properties of slab-type two-dimensional photonic crystal waveguides
| Autor: | Yurii A. Vlasov, E. Dulkeith, Sharee J. McNab |
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| Rok vydání: | 2005 |
| Předmět: |
Materials science
Wave propagation business.industry Bandwidth (signal processing) Plane wave FOS: Physical sciences Physics::Optics Radius Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention Optics Photonic crystal waveguides law Slab Optoelectronics business Waveguide Optics (physics.optics) Physics - Optics Photonic crystal |
| Zdroj: | Physical Review B. 72 |
| ISSN: | 1550-235X 1098-0121 |
| DOI: | 10.1103/physrevb.72.115102 |
| Popis: | We report on systematic experimental mapping of the transmission properties of two-dimensional silicon-on-insulator photonic crystal waveguides for a broad range of hole radii, slab thicknesses and waveguide lengths for both TE and TM polarizations. Detailed analysis of numerous spectral features allows a direct comparison of experimental data with 3D plane wave and finite-difference time-domain calculations. We find, counter-intuitively, that the bandwidth for low-loss propagation completely vanishes for structural parameters where the photonic band gap is maximized. Our results demonstrate that, in order to maximize the bandwidth of low-loss waveguiding, the hole radius must be significantly reduced. While the photonic band gap considerably narrows, the bandwidth of low-loss propagation in PhC waveguides is increased up to 125nm with losses as low as 8$\pm$2dB/cm. 10 pages, 8 figures |
| Databáze: | OpenAIRE |
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