Related Experiment Video
Updated: Jun 10, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Wavelength-dependent transmission through sharp 90 degrees bends in sub-wavelength metallic slot waveguides
Daniel R Mason1, Dmitri K Gramotnev, Kwang S Kim
1Center for Superfunctional Materials, Department of Chemistry and Department of Physics, Pohang University of Science and Technology, San 31, Hyojadong, Namgu, Pohang 790-784, Korea. drmason@postech.ac.kr
Abstract:
In this paper, we present a comprehensive numerical study of the wavelength-dependence of transmission through sharp 90 degrees bends in metallic slot waveguides with sub-wavelength localization and varying geometrical parameters. In particular, it is demonstrated that increasing the plasmon wavelength results in a significant increase (up to nearly 100%) of transmission through the bend, combined with a reduction in the mode asymmetry in the second arm of the bend. The mode asymmetry and its relaxation are explained by interference of the transmitted mode with non-propagating and leaky modes generated at the bend. Comparison with the two-dimensional case of a metal-dielectric-metal waveguide is also conducted, showing significant differences for the slot waveguides based on the presence of different non-propagating and leaky modes.
Related Concept Videos
Standing Waves in a Cavity
Propagation of Waves
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
Boundary Conditions: Lossless Lines
At the receiving end, the boundary condition states that the voltage equals the product of the receiving-end impedance and current. This relationship is expressed as a function of the incident and...
Traveling Waves: Lossless Lines
Transmission Line Design Considerations
Deformations in a Transverse Cross Section
As the material stretches, it expands or contracts in orthogonal directions to the load. This phenomenon varies...

