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IBM Scientists 'Slow Light' to Improve Optical Communications

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YORKTOWN HEIGHTS, N.Y., Nov. 3 -- IBM today announced its researchers have used photonic crystal technology to "slow light," a process that could lead to the use of light instead of electricity in the connection of electronic components and optical communications circuits, which scientists say could make those components work vastly better. Scientists have searched for practical ways to use light to speed communication between the components within a computer. But, to be realistic, the components to support such an optical network need to provide excellent control over the light signal while...Read full article

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    Published: November 2005
    Glossary
    optical
    Pertaining to optics and the phenomena of light.
    photonic crystals
    Photonic crystals are artificial structures or materials designed to manipulate and control the flow of light in a manner analogous to how semiconductors control the flow of electrons. Photonic crystals are often engineered to have periodic variations in their refractive index, leading to bandgaps that prevent certain wavelengths of light from propagating through the material. These bandgaps are similar in principle to electronic bandgaps in semiconductors. Here are some key points about...
    waveguide
    A waveguide is a physical structure or device that is designed to confine and guide electromagnetic waves, such as radio waves, microwaves, or light waves. It is commonly used in communication systems, radar systems, and other applications where the controlled transmission of electromagnetic waves is crucial. The basic function of a waveguide is to provide a path for the propagation of electromagnetic waves while minimizing the loss of energy. Waveguides come in various shapes and sizes, and...
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