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Related Concept Videos

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:
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...
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Electromagnetic Waves in Matter

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Furthermore, the...
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:
Capacitor With A Dielectric01:18

Capacitor With A Dielectric

Parallel plate capacitors consist of two conducting plates separated by a certain distance. However, it is mechanically difficult to hold the large plates parallel to each other without actual contact. Hence, a dielectric layer is commonly placed between the plates, which provides an easy solution for holding the plates together with a small gap and increases the capacitance of the capacitor.
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Dielectric Polarization in a Capacitor

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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping
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Published on: March 20, 2017

Pulse transmission through a dielectric optical waveguide.

F P Kapron, D B Keck

    Applied Optics
    |January 30, 2010
    PubMed
    Summary
    This summary is machine-generated.

    This study explores optical waveguide dispersion, finding an optimal Gaussian pulse width for maximum information capacity. This enables high-speed data transmission in low-loss waveguides, reaching over 30 gigabits per second.

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    Area of Science:

    • Optics and Photonics
    • Telecommunications Engineering
    • Materials Science

    Background:

    • Waveguide dispersion, affecting attenuation and phase velocity, limits data transmission rates.
    • Understanding dispersion is crucial for optimizing optical communication systems.

    Purpose of the Study:

    • To formulate waveguide propagation considering dispersion effects.
    • To determine the optimal input Gaussian pulse width for maximum information carrying capacity.
    • To assess achievable information rates in single-mode glass optical waveguides.

    Main Methods:

    • Formulation of waveguide propagation for pulse-modulated carrier waves.
    • Inclusion of attenuation and phase velocity dispersion.
    • Numerical study of single-mode glass optical waveguides with potential for zero total dispersion.

    Main Results:

    • An optimal input Gaussian pulse width was identified for maximizing information capacity.
    • Low-loss (20 dB/km) kilometer-length waveguides were analyzed.
    • Information rates of at least 3 x 10^10 bits/sec are predicted.

    Conclusions:

    • Dispersion management is key to high-capacity optical communication.
    • Optimized pulse shaping can overcome waveguide limitations.
    • Advanced optical waveguides can support ultra-high-speed data transmission.