Slow light in a dielectric waveguide with negative-refractive-index photonic crystal cladding
2008 (English)In: Optics Express, ISSN 1094-4087, Vol. 16, no 15, 11077-11082 p.Article in journal (Refereed) Published
A slow light waveguide made of a dielectric slab inserted in a two-dimensional photonic crystal with a negative effective refractive index is proposed and numerically studied. The waveguide may possess modes with zero group velocity, and its frequency varies with the thickness of the waveguide. A linearly tapered left-handed photonic crystal waveguide is also proposed and studied. It is shown that the so-called 'trapped rainbow' proposed by Tsakmakidis, Boardman, and Hess  is difficult to realize due to a coupling of forward- and backward-propagating modes near zero group velocity. However, different frequency components of a broadband excitation can still be separated through partial accumulation at waveguide sections of different thicknesses.
Place, publisher, year, edition, pages
2008. Vol. 16, no 15, 11077-11082 p.
IdentifiersURN: urn:nbn:se:kth:diva-17737ISI: 000258069100023ScopusID: 2-s2.0-47849087730OAI: oai:DiVA.org:kth-17737DiVA: diva2:335782
QC 201005252010-08-052010-08-052013-11-19Bibliographically approved