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What is an evanescent wave? What are its applications?

  1. Aug 2, 2011 #1
    I am reading some papers that mention evanescent waves. From what I can find, evanescent waves occur because of the Maxwell Boundary Conditions but I don't really see how. Could some please comment on this or just on the general topic. Thanks!
     
  2. jcsd
  3. Aug 2, 2011 #2
    That's a nice question. Evanescent fields are near field effects which are not easy to deal with. We had struggled to derive evanescent fields from Maxwell Equations to solve a problem in an hypothetical fiber network a while ago and I assure you it's not an easy task to mathematically immerse into evanescent phenomena. For general information and some of the applications ; http://www.faculty.iu-bremen.de/dknipp/c320352/Projects/Presentations%202005/CL%20Evanescent%20Fields.pdf [Broken]

    I would like to hear if someone comes up with the proof that derives evanescent fields from Maxwell equations step-by-step.
     
    Last edited by a moderator: May 5, 2017
  4. Aug 2, 2011 #3
    Thanks!
     
  5. Aug 2, 2011 #4

    vanhees71

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