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Related Concept Videos

Standing Waves in a Cavity01:28

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:
Transmission Line Design Considerations01:23

Transmission Line Design Considerations

Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
Plane Electromagnetic Waves II01:29

Plane Electromagnetic Waves II

Consider a plane wavefront traveling in position x-direction with a constant speed. This wavefront can be utilized to obtain the relationship between electric and magnetic fields with the help of Faraday's law.
Plane Electromagnetic Waves I01:30

Plane Electromagnetic Waves I

The existence of combined electric and magnetic fields that propagate through space as electromagnetic (EM) waves is the most significant prediction of Maxwell's equations. As Maxwell's equations hold in free space, the predicted electromagnetic waves do not require a medium for their propagation. An EM wave comprises an electric field, defined as the force per charge on a stationary charge, and a magnetic field, which is the force per charge on a moving charge.
The EM field is assumed to be a...
Propagation of Waves01:07

Propagation of Waves

When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
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...
Bewley Lattice Diagram01:12

Bewley Lattice Diagram

The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.

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Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor
07:28

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Published on: August 30, 2012

Multilayered slab waveguide design using a hybrid field vector.

J de Jong

    Applied Optics
    |June 18, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A new model simplifies the design of planar multilayered waveguides using a field-related vector. This approach offers insights into guided modes and field components affected by waveguide parameters.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Planar multilayered waveguides are crucial optical components.
    • Designing these structures requires efficient modeling techniques.

    Purpose of the Study:

    • To introduce a simplified model for designing planar multilayered waveguides.
    • To provide qualitative insights into guided mode behavior.

    Main Methods:

    • A field-related vector model is developed.
    • The vector follows trajectories based on the depth coordinate.
    • Diagrammatic representation aids analysis.

    Main Results:

    • The model facilitates easy design of multilayered waveguides.
    • It visualizes the impact of layer number, phase thickness, and polarization on guided modes.
    • Effects on internal field components can be studied.

    Conclusions:

    • The introduced model offers a straightforward method for waveguide design.
    • It enhances understanding of how structural parameters influence optical properties.