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Standing Waves in a Cavity

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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 12, 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

High-density waveguide superlattices with low crosstalk.

Weiwei Song¹, Robert Gatdula¹, Siamak Abbaslou¹

¹Department of Electrical and Computer Engineering, Rutgers University, Piscataway, New Jersey 08854, USA.

Nature Communications

|May 12, 2015

Summary

This summary is machine-generated.

Silicon photonics integration density is enhanced using novel waveguide superlattices. This design achieves high-density waveguide integration at a half-wavelength pitch with low crosstalk, improving performance.

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Last Updated: Apr 12, 2026

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Area of Science:

Photonics
Integrated Circuits
Materials Science

Background:

Silicon photonics is crucial for low-cost, large-scale photonic integration.
Increasing integration density is key for future silicon photonic chip development.
Waveguide density significantly impacts overall chip integration density and performance.

Purpose of the Study:

To address the challenge of high-density waveguide integration in silicon photonics.
To propose a novel waveguide superlattice structure for improved integration.
To demonstrate design concepts enabling reduced crosstalk and enhanced performance.

Main Methods:

Proposal of a waveguide superlattice structure.
Demonstration of advanced superlattice design concepts, including interlacing-recombination.
Analysis of waveguide integration at a half-wavelength pitch.

Main Results:

Achieved high-density waveguide integration at a half-wavelength pitch.
Demonstrated low crosstalk between integrated waveguides.
Showcased potential for significant reduction in on-chip footprint for waveguide elements.

Conclusions:

Waveguide superlattices offer a viable solution for ultra-dense photonic integration.
The proposed designs enable enhanced performance for applications like optical-phased arrays.
This advancement paves the way for ultra-dense space-division multiplexing in silicon photonics.