Open AccessSpectral Characteristics of Plasmonic Metal–Insulator–Metal Waveguides With a Tilted Groove
Author(s) -
Kun-Hua Wen,
Lian-Shan Yan,
Wei Pan,
Bin Luo,
Zhen Guo,
Ying-Hui Guo,
Xian-Gang Luo
Publication year - 2012
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2012.2216863
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
Spectral characteristics of surface plasmon polaritons (SPPs) in metal-insulator-metal (MIM) waveguides with a rectangular or V-groove are analyzed. Theoretical and simulation results indicate that both schemes can achieve wavelength filtering functionality with the center wavelength possessing a linear relationship with the length of the groove. The plasmonic MIM waveguide with a tilted groove could be regarded as the composition of a hypotenuse, rectangular, and V-shaped structures based on theoretical analyses. Characteristics of such waveguides are further investigated numerically by the finite-different time-domain (FDTD) method. The center wavelength of such structure has a nonlinear relationship with the height of the groove. The unique feature may help researchers design grooves with specified angles in nanophotonic integrated circuits.