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Refractive index - solid core

  1. Sep 30, 2014 #1
    Hi All,

    I'm trying to create something which has a solid, cylindrical, non-reflective core (assume the core is made out of a black rubber similar to that of a car tyre for instance and 20m in length, but only 1cm in diameter), which has a translucent or transparent plastic layer (or several layers) wrapped (read: extruded) around this black, solid cylinder.

    The purpose of the additional transparent or translucent layers is to ensure when a light is shone into the side of the previously black object, the whole object will glow. Similar to 'side glow optical fibre'.

    The question is; what refractive index (or indices) do I need to aim for in the outer layer(s) to ensure the light glows brightly and spreads as evenly as possible along the length of the object longitudinally, even when the object is bent.

    Thanks in advance.

  2. jcsd
  3. Oct 5, 2014 #2
    Thanks for the post! Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
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