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Self-aligned implanted waveguide detector

  • US 20050212068A1
  • Filed: 10/06/2004
  • Published: 09/29/2005
  • Est. Priority Date: 10/07/2003
  • Status: Active Grant
First Claim
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1. A method of fabricating a detector, said method comprising:

  • forming an island of detector core material on a substrate, said island having a horizontally oriented top end, a vertically oriented first sidewall, and a vertically oriented second sidewall that is opposite said first sidewall;

    implanting a first dopant into the first sidewall to form a first conductive region that has a top end that is part of the top end of said island;

    implanting a second dopant into the second sidewall to form a second conductive region that has a top end that is part of the top end of said island;

    fabricating a first electrical connection to the top end of the first conductive region; and

    fabricating a second electrical connection to the top end of the second conductive region.

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