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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:
Switching of BJT01:22

Switching of BJT

Switching behavior in Bipolar Junction Transistors (BJTs) is a fundamental aspect utilized in various electronic circuits, particularly for digital logic applications like switches and amplifiers. In a typical switching circuit, a BJT alternates between cut-off and saturation modes, corresponding to the "off" and "on" states, respectively, thus behaving like an ideal switch.
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Propagation of Waves01:07

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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.
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Electromagnetic Wave Equation01:24

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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.
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Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

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Published on: November 30, 2012

N x N coupled waveguide switch.

L A Molter-Orr, H A Haus

    Optics Letters
    |September 2, 2009
    PubMed
    Summary
    This summary is machine-generated.

    This study examines an N x N coupled planar waveguide array for optical switching. It finds that precise control over coupling and detuning parameters is needed for specific channel switching, posing practical challenges.

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    Area of Science:

    • Photonics and Optical Engineering
    • Integrated Optics
    • Waveguide Devices

    Background:

    • Coupled planar waveguide arrays are fundamental components in integrated optics.
    • Optical switches are crucial for routing signals in photonic networks.
    • Controlling light propagation in waveguide arrays is key to developing advanced photonic devices.

    Purpose of the Study:

    • To analyze the switching capabilities of a general N x N coupled planar waveguide array.
    • To determine the conditions required for transferring an input signal to a specific output channel.
    • To assess the practical feasibility of realizing such waveguide switches.

    Main Methods:

    • Theoretical examination of an N x N coupled planar waveguide array.
    • Analysis of input-to-output channel transfer mechanisms.
    • Investigation of the role of coupling and detuning parameters in waveguide switching.

    Main Results:

    • A unique combination of coupling and detuning parameters enables switching between any two specified guides.
    • Achieving selective switching necessitates independent control over both coupling and detuning parameters.
    • The precise control required suggests potential practical difficulties in implementation.

    Conclusions:

    • The N x N coupled planar waveguide array can function as a switch.
    • Realizing a practical waveguide switch demands sophisticated and independent control of coupling and detuning parameters.
    • The complexity of parameter control may limit the widespread application of this specific switch design.