Slow surface plasmon polaritons with a large normalized delay bandwidth product in an ultracompact metal gap superlattice

被引：6
|
作者：
Li, Chunlei [1 ,2 ]
Zhang, Xueru [1 ]
Wang, Yuxiao [1 ]
Song, Yinglin [1 ]
Kong, Degui [3 ]
Wang, Yueke [4 ]
机构：
[1] Harbin Inst Technol, Dept Phys, Harbin 150001, Peoples R China
[2] NE Forestry Univ, Dept Phys, Harbin 150040, Peoples R China
[3] Heilongjiang Univ, Coll Elect Engn, Harbin 150080, Peoples R China
[4] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore
来源：
OPTICS COMMUNICATIONS | 2012年 / 285卷 / 07期
关键词：
Slow surface plasmon polaritons; Normalized delay-bandwidth product; Superlattice; TIME-DELAY; LIGHT; WAVE; LINE;
D O I：
10.1016/j.optcom.2011.12.024
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose a metal gap superlattice that can decrease the group velocity of surface plasmon polaritons (SPPs) with a large normalized delay bandwidth product (NDBP) and small high-order dispersion. The length of the superlattice is only 8.60 mu m and the transmission is 0.4. The multiple reflections of photons in the nanocavity result in slow SPP group velocity. The numerical analysis exploiting the transfer matrix method (TMM) is confirmed by the finite-difference time-domain (FDTD) numerical simulations. In addition, we also analyze the reason for pulse deformation. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1993 / 1996
页数：4
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