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Guided wave spatial filter

  • US 20040131310A1
  • Filed: 09/11/2003
  • Published: 07/08/2004
  • Est. Priority Date: 10/09/2000
  • Status: Active Grant
First Claim
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1. A guided wave spatial filter for receiving input radiation and outputting corresponding filtered output radiation, the filter comprising first and second waveguide sections connected in series, the sections:

  • (a) mutually matched for transmitting fundamental mode radiation components present in the input radiation therethrough to provide the output radiation; and

    (b) mutually mismatched for hindering higher-order mode radiation components present in the input radiation from propagating therethrough and contributing to the output radiation.

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