Self-aligned implanted waveguide detector
First Claim
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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Accused Products
Abstract
A method of fabricating a detector, the method including forming an island of detector core material on a substrate, the 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 the 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 the 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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Citations
15 Claims
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1. A method of fabricating a detector, said method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An optical detector comprising:
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a substrate;
an island of detector material formed on the substrate, said island having a horizontally oriented top end, a vertically oriented first sidewall, and vertically oriented second sidewall that is opposite said first sidewall, said island having a first doped region extending into the island through first sidewall and forming a first conductive region that extends down into the island of detector material, said island also having a second doped region extending into the island through the second sidewall and forming a second conductive region that extends down into island of the detector material, the first and second conductive regions each having a top end that is part of the top end of the island;
a first electrical connection to the top end of the first conductive region; and
a second electrical connection to the top end of the second conductive region. - View Dependent Claims (11, 12, 13, 14, 15)
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Specification