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Related Concept Videos

The Wave Nature of Light02:12

The Wave Nature of Light

The nature of light has been a subject of inquiry since antiquity. In the seventeenth century, Isaac Newton performed experiments with lenses and prisms and was able to demonstrate that white light consists of the individual colors of the rainbow combined together. Newton explained his optics findings in terms of a "corpuscular" view of light, in which light was composed of streams of extremely tiny particles traveling at high speeds according to Newton's laws of motion.
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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.
The EM field is assumed to be a...
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:
The de Broglie Wavelength02:32

The de Broglie Wavelength

In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
Plane Electromagnetic Waves II01:29

Plane Electromagnetic Waves II

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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
09:43

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Published on: March 20, 2017

Photonic switching in waveguides using spatial concepts inspired by EIT.

Pavel Ginzburg, Meir Orenstein

    Optics Express
    |June 17, 2009
    PubMed
    Summary
    This summary is machine-generated.

    Researchers present novel optical waveguide switches inspired by electromagnetic induced transparency (EIT). These devices utilize spatial EIT, space reciprocity, and tunneling for advanced optical signal control, offering new possibilities in photonics.

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    Published on: September 5, 2019

    Area of Science:

    • Photonics and Optical Engineering
    • Quantum Optics and Electromagnetism

    Background:

    • Electromagnetic induced transparency (EIT) is a quantum interference effect typically observed in atomic systems.
    • Controlling optical signals with high precision is crucial for advanced optical communication and computing.

    Purpose of the Study:

    • To introduce and analyze novel optical waveguide switch configurations inspired by EIT concepts.
    • To demonstrate the feasibility of spatial EIT and related phenomena in integrated optical devices.

    Main Methods:

    • Development of three distinct spatial EIT configurations for optical waveguide switches.
    • Theoretical analysis using closed-form equations for each configuration.
    • Numerical simulations to validate device performance.

    Main Results:

    • Successful implementation of spatial EIT for optical signal gating.
    • Demonstration of enhanced switching capabilities using space reciprocity, surpassing time-domain EIT limitations.
    • Novel spatial EIT approach utilizing quantum tunneling effects.

    Conclusions:

    • Spatial EIT principles can be effectively translated to optical waveguide devices.
    • The proposed configurations offer new avenues for designing high-performance optical switches.
    • The study provides both theoretical and simulated evidence for the practical application of these novel EIT-based switches.