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Optical eraser and node switch for an optical network

  • US 4,717,230 A
  • Filed: 06/28/1985
  • Issued: 01/05/1988
  • Est. Priority Date: 06/28/1985
  • Status: Expired due to Term
First Claim
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1. Apparatus comprising a hollow sleeve having a longitudinal axis and an internal surface, said sleeve having a cross-sectional geometry normal to said axis such that at least first and second portions of said internal surface are closely juxtaposed with one another, said first portion including means parallel to said axis for securing a waveguide, said apparatus including a waveguide secured by said means, said waveguide protruding beyond said sleeve, said apparatus further including absorber means adapted for absorbing optical energy from said waveguide when moved into close proximity therewith, said absorber means being connected to said second portion of said internal surface, said absorber means being completely located within said hollow sleeve, said sleeve being of a geometry such that said absorber means and said waveguide are normally spaced apart a distance such that said absorber means normally absorbs only negligible energy from said waveguide.

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