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Photonic crystal fiber

  1. Apr 29, 2004 #1
    Hi,
    Can someone tell me how a wave is guided (in a fiber for instance) thinking
    in term of diffraction (or scattering) and not in term of successive
    reflections.
    And my second question is : would it be possible to "extrude" a plan
    diffractive element in a fiber to guide wave and have the right diffractive
    motion at the end of the "diffractive fiber" ?
     
  2. jcsd
  3. May 2, 2004 #2
    Could you rephrase/expound on your second question? I'm not understanding it.
     
  4. May 2, 2004 #3
    Well,
    Imagine you want a particular field pattern, a particular laser beam shape.
    It is possible to use holograms or SPM to "create" a multifocus tool, ie
    a sort of lattice of light spots for instance, or a particular beam shape
    such as Laguerre-Gauss laser beams.
    My question was : would it be possible to put a third dimension to this SPM or hologram, just like an optical fibre, in order to guide a wave, and have the desired field at the end of the fiber, such as a Bessel beam, or a Laguerre-Gauss beam....
    I was thinking of it just after I read an article of Prof. Canning in
    OpticsExpress this month about the so-called "Fresnel-fiber".
     
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