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Related Concept Videos

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...
Propagation Speed of Electromagnetic Waves01:30

Propagation Speed of Electromagnetic Waves

Electromagnetic waves are consistent with Ampere's law. Assuming there is no conduction current Ampere's law is given as:
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:
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...
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.
Generating Electromagnetic Radiations01:10

Generating Electromagnetic Radiations

The German physicist Heinrich Hertz (1857–1894) was the first to generate and detect certain types of electromagnetic waves in the laboratory. Starting in 1887, he performed a series of experiments that confirmed the existence of electromagnetic waves and verified that they travel at the speed of light. Hertz used an alternating-current RLC (resistor-inductor-capacitor) circuit that resonated at a known frequency and connected it to a loop of wire. High voltages induced across the gap in the...

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Related Experiment Video

Updated: Jun 22, 2026

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

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Supercontinuum generation in planar rib waveguides enabled by anomalous dispersion.

O Fedotova, A Husakou, J Herrmann

    Optics Express
    |June 9, 2009
    PubMed
    Summary

    We numerically studied supercontinuum generation in planar rib waveguides, achieving broadband coherent radiation over nearly two octaves. This research offers a building block for integrated optical circuits.

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    Last Updated: Jun 22, 2026

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

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    Published on: November 30, 2012

    In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation
    09:39

    In-situ Tapering of Chalcogenide Fiber for Mid-infrared Supercontinuum Generation

    Published on: May 27, 2013

    Area of Science:

    • Nonlinear optics
    • Integrated photonics

    Background:

    • Supercontinuum generation is crucial for various photonic applications.
    • Planar nonlinear waveguides offer potential for on-chip optical signal processing.

    Purpose of the Study:

    • To predict and numerically study supercontinuum generation in planar rib waveguides.
    • To achieve broadband coherent radiation over almost two octaves.

    Main Methods:

    • Numerical simulation of supercontinuum generation.
    • Utilizing anomalous dispersion provided by the waveguide contribution at the input wavelength.

    Main Results:

    • Demonstrated supercontinuum generation extending over almost two octaves.
    • Identified planar rib waveguides as a viable platform for broadband coherent radiation.

    Conclusions:

    • Planar nonlinear waveguides are effective for generating ultra-broadband coherent radiation.
    • These waveguides can serve as integral components in advanced integrated optical circuits.