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Difference between Material dispersion and waveguide dispersion?

  1. May 4, 2010 #1
    Can someone please explain the difference between Material dispersion and waveguide dispersion?
     
  2. jcsd
  3. May 4, 2010 #2

    Meir Achuz

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    Re: Dispersion

    "Dispersion" is determined by the relation between wave number
    [tex]k(=2\pi/\lambda)[/tex] and frequency [tex]\omega(=2\pi f)[/tex].
    In a medium, the relation is [tex]k=\sqrt{\epsilon\mu}\omega/c[/tex].
    In a wave guide, it is [tex]k=[\sqrt{\epsilon\mu}/c]\sqrt{\omega^2-\omega^2_c}[/tex],
    where [tex]\omega_c[/tex] depends on the dimensions of the wave guide.
     
    Last edited: May 4, 2010
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