Title :
Plasmon-Induced Transparency and Dispersionless Slow Light in a Novel Metamaterial
Author :
Jiakun Song ; Jietao Liu ; Yuzhi Song ; Kangwen Li ; Zuyin Zhang ; Yun Xu ; Xin Wei ; Guofeng Song
Author_Institution :
Inst. of Semicond., Beijing, China
Abstract :
We propose a novel metamaterial structure to realize dispersionless slow light based on plasmon-induced transparency (PIT) at optical frequency. Simply by breaking the symmetry of the metamaterial structure, two electric excitation coupling to the magnetic resonance (EEMR) modes generate and interplay with each other resulting the formation of the PIT resonance. Due to the hybridization of the two EEMR modes, an ultrabroad flat-band as large as 15 THz with average group index of ~5 is obtained. The corresponding normalized delay-bandwidth product is 0.475, which indicates the prominent feature in light slowing down without distortion. The proposed metamaterial structure is promising for practical information storage, optical memory, and optical buffers design.
Keywords :
optical design techniques; optical metamaterials; optical storage; slow light; EEMR mode hybridization; PIT resonance; dispersionless slow light; electric excitation coupling to the magnetic resonance modes; frequency 15 THz; metamaterial structure symmetry; normalized delay-bandwidth product; optical buffer design; optical frequency; optical memory; plasmon-induced transparency; practical information storage; Bandwidth; Indexes; Magnetic materials; Metals; Metamaterials; Optical buffering; Slow light; Metamaterials; metamaterials; optical resonators; plasmon-induced transparency (PIT);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2015.2414418
