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Standing Waves in a Cavity

Standing 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:

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Related Experiment Video

Updated: Apr 3, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Plasmonic coaxial waveguide-cavity devices.

Amirreza Mahigir, Pouya Dastmalchi, Wonseok Shin

|September 15, 2015

Summary

This summary is machine-generated.

Three-dimensional plasmonic waveguide-cavity systems were studied. These structures can mimic two-dimensional devices, offering a new platform for plasmonic device implementation.

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Last Updated: Apr 3, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

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Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

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Published on: February 25, 2017

Area of Science:

Plasmonics
Nanophotonics
Waveguide theory

Background:

Plasmonic devices offer miniaturization potential for optical components.
Metal-dielectric-metal (MDM) waveguides are widely studied for their unique properties.
Three-dimensional (3D) plasmonic structures are less explored but offer fabrication advantages.

Purpose of the Study:

To theoretically investigate 3D plasmonic waveguide-cavity structures.
To explore the use of stub resonators coupled to coaxial waveguides.
To compare the performance of 3D and 2D plasmonic devices.

Main Methods:

Theoretical analysis of 3D plasmonic waveguide-cavity systems.
Modeling of stub resonators (finite length plasmonic coaxial waveguides) coupled to a main plasmonic coaxial waveguide.
Utilizing single-mode scattering matrix theory for system characterization.

Main Results:

The properties of the 3D waveguide-cavity systems are accurately described by single-mode scattering matrix theory.
Nearly identical transmission spectra were achieved between 3D plasmonic coaxial waveguide-cavity devices and 2D MDM devices with optimized design parameters.
Resonators can be terminated in either a short or open circuit.

Conclusions:

3D plasmonic coaxial waveguides provide a viable platform for implementing designs previously limited to 2D MDM structures.
This research bridges the gap between theoretical 2D plasmonic designs and practical 3D implementations.
The findings pave the way for more complex and practical 3D plasmonic integrated circuits.