Authors: | H. Gersen, T.J. Karle, R.J.P. Engelen, W. Bogaerts, J.P. Korterik, N.F. van Hulst, T.F. Krauss, L. Kuipers | Title: | Direct observation of Bloch harmonics and negative phase velocity in photonic crystal waveguides | Format: | International Journal | Publication date: | 4/2005 | Journal/Conference/Book: | Physics Review Letters
| Volume(Issue): | 94(12) p.123901 | DOI: | 10.1103/physrevlett.94.123901 | Citations: | 83 (Dimensions.ai - last update: 8/12/2024) 55 (OpenCitations - last update: 3/5/2024) Look up on Google Scholar
| Download: |
(454KB) |
Abstract
The eigeneld distribution and band-structure of a photonic crystal waveguide have been measured
with a phase-sensitive near-eld scanning optical microscope. Bloch modes, which consist of
more than one spatial frequency, are visualized in the waveguide. In the band-structure multiple
Brillouin zones due to zone folding are observed in which positive and negative dispersion is seen.
The negative slopes are shown to correspond to a negative phase velocity but positive group velocity.
The lateral mode prole for modes separated by one reciprocal lattice vector is found to be
dierent. Related Research Topics
Related Projects
|
|
|
Citations (OpenCitations)
|
|