Related Experiment Video
Updated: Jun 28, 2026
07:39
Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons
Published on: July 21, 2018
Differential method for modeling dielectric-loaded surface plasmon polariton waveguides
S Massenot1, J-C Weeber, A Bouhelier
1Institut Carnot de Bourgogne, UMR 5209 CNRS-Université de Bourgogne, Dijon Cedex, France. sebastien.massenot@u-bourgogne.fr
Optics Express
|October 30, 2008
Summary
The differential method efficiently analyzes dielectric loaded surface plasmon polariton waveguides (DLSPPWs) for optical interconnects. It accurately calculates mode properties and profiles, even for complex waveguide designs.
Area of Science:
- Photonics and Nanophotonics
- Computational Electromagnetics
Background:
- Dielectric loaded surface plasmon polariton waveguides (DLSPPWs) are promising for optical interconnects.
- Accurate modeling of DLSPPWs is crucial for their practical implementation.
Purpose of the Study:
- To demonstrate the efficiency and versatility of the differential method for analyzing DLSPPWs.
- To validate the differential method against established numerical techniques.
Main Methods:
- Applying the differential method, a grating theory approach, to DLSPPWs.
- Calculating mode effective indices (real and imaginary parts) and mode profiles.
- Comparing results with the effective index method and finite element methods.
Main Results:
- The differential method accurately predicts mode effective indices and profiles for DLSPPWs.
- Results show good agreement with established numerical methods.
- The method's versatility is confirmed for complex structures like trapezoidal waveguides and finite width metal stripes.
Conclusions:
- The differential method is an efficient and reliable tool for investigating DLSPPWs.
- This method can be applied to various complex waveguide configurations.
- It offers a valuable approach for designing future optical interconnects.
Related Concept Videos
01:29Potential Due to a Polarized Object
A neutral atom consists of a positively charged nucleus surrounded by a negatively charged electron cloud. When placed in an external electric field, the external electric force pulls the electrons and nucleus apart, opposite to the intrinsic attraction between the nucleus and the electrons. The opposing forces balance each other with a slight shift between the center of masses of the nucleus and the electron cloud, resulting in a polarized atom. On the other hand, a few molecules, like water,...
01:31Dielectric Polarization in a Capacitor
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
01:30The Electrical Double Layer
In the region where two bulk phases meet, an intricate electric charge distribution arises due to charge transfer, ion adsorption, molecular orientation, and charge distortion. This complex distribution is commonly referred to as the electrical double layer.When a solid electrode interfaces with ions in an electrolyte solution, the speed of electron transfer dictates the rates of oxidation and reduction. The electrode acquires a charge through the escape of atoms into the solution as cations or...
01:27Electrostatic Boundary Conditions in Dielectrics
When an electric field passes from one homogeneous medium to another, crossing the boundary between the two mediums imparts a discontinuity in the electric field. This results in electrostatic boundary conditions that depend on the type of mediums the field propagates through.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity.
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity.
01:28Standing Waves in a Cavity
A household microwave and lasers are examples of standing electromagnetic waves in a cavity. When two conducting metal plates are placed parallel at the nodal planes, it creates a cavity where standing waves are formed. The cavity between the two planes is analogous to a stretched string held at the points x = 0 and x = L. Here, the distance 'L' between the two planes must be an integer multiple of half of the wavelength. The wavelengths that satisfy this condition are given by:
01:26Susceptibility, Permittivity and Dielectric Constant
When placed in an external electric field, a dielectric material gets polarized. The charge density in the dielectric material is given by the sum of the bound and free charge densities, while the total charge density can also be written in terms of the total electric field. The bound charge density can be measured in terms of polarization, leading to the relationship between electric displacement and polarization.