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Sometimes It Pays to Fill the Holes in a Holey Fiber

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Breck Hitz

Researchers at California Institute of Technology in Pasadena have filled the holes of a holey fiber and propose that such a device could prove useful for nonlinear optics, for spectroscopy and for other applications. They have demonstrated efficient two-photon fluorescence in their experimental fiber. There are two types of holey fiber, each based on its own optical principle. In a photonic crystal fiber, light is guided in the core by total internal reflection because the airholes in the cladding make its effective index lower than that of the core. In a photonic bandgap fiber, light is...Read full article

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    Published: February 2005
    Glossary
    nonlinear optics
    Nonlinear optics is a branch of optics that studies the optical phenomena that occur when intense light interacts with a material and induces nonlinear responses. In contrast to linear optics, where the response of a material is directly proportional to the intensity of the incident light, nonlinear optics involves optical effects that are not linearly dependent on the input light intensity. These nonlinear effects become significant at high light intensities, such as those produced by...
    California Institute of Technologychemicalsholey fibernonlinear opticsResearch & TechnologyspectroscopyTech Pulse

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