Next Article in Journal
Optoelectronic Properties and Structural Characterization of GaN Thick Films on Different Substrates through Pulsed Laser Deposition
Next Article in Special Issue
Light Trapping above the Light Cone in One-Dimensional Arrays of Dielectric Spheres
Previous Article in Journal
The Role of Overloading on the Reduction of Residual Stress by Cyclic Loading in Cold-Drawn Prestressing Steel Wires
Previous Article in Special Issue
Designing a Novel High-Performance FBG-OADM Based on Finite Element and Eigenmode Expansion Methods
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Appl. Sci. 2017, 7(1), 86;

A Metal-Insulator-Metal Deep Subwavelength Cavity Based on Cutoff Frequency Modulation

Department of Physics, Chung-Ang University, Seoul 06974, Korea
Author to whom correspondence should be addressed.
Academic Editor: Boris Malomed
Received: 16 November 2016 / Revised: 23 December 2016 / Accepted: 10 January 2017 / Published: 17 January 2017
(This article belongs to the Special Issue Guided-Wave Optics)
Full-Text   |   PDF [2273 KB, uploaded 17 January 2017]   |  


We propose a plasmonic cavity using the cutoff frequency of a metal-insulator-metal (MIM) first-order waveguide mode, which has a deep subwavelength physical size of 240 × 210 × 10 (nm3) = 0.00013 λ03. The cutoff frequency is a unique property of the first-order waveguide mode and provides an effective mode gap mirror. The cutoff frequency has strong dependence on a variety of parameters including the waveguide width, insulator thickness, and insulator index. We suggest new plasmon cavities using three types of cutoff frequency modulations. The light can be confined in the cavity photonically, which is based on the spatial change of the cutoff frequency. Furthermore, we analyze cavity loss by investigating the metallic absorption, radiation, and waveguide coupling loss; the radiation loss of the higher-order cavity mode can be suppressed by multipole cancellation. View Full-Text
Keywords: MIM; deep subwavelength; cutoff; first order waveguide mode MIM; deep subwavelength; cutoff; first order waveguide mode

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
Printed Edition Available!
A printed edition of this Special Issue is available here.

Share & Cite This Article

MDPI and ACS Style

Moon, K.; Lee, T.-W.; Lee, Y.J.; Kwon, S.-H. A Metal-Insulator-Metal Deep Subwavelength Cavity Based on Cutoff Frequency Modulation. Appl. Sci. 2017, 7, 86.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top