INTEGRATED BOUND-MODE SPECTRAL/ANGULAR SENSORS
First Claim
1. A 2-D sensor array, comprising:
- a semiconductor substrate,a plurality of pixels disposed on the semiconductor substrate, wherein each of the plurality of pixels comprise;
at least one coupling region and at least one junction region;
a slab waveguide structure disposed on the semiconductor substrate and extending from the at least one coupling region to the at least one junction region, and comprising a confinement layer disposed between a first cladding layer and a second cladding layer, wherein the first cladding and the second cladding each have a refractive index that is lower than a refractive index of the confinement layer; and
at least one coupling structure disposed in the coupling region and within the slab waveguide, the coupling structure comprising at least two materials having different indices of refraction, and arranged as a grating defined by a grating period,wherein the junction region comprises a p-n junction in communication with electrical contacts for biasing and collection of carriers resulting from absorption of incident radiation.
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Accused Products
Abstract
A 2-D sensor array includes a semiconductor substrate and a plurality of pixels disposed on the semiconductor substrate. Each pixel includes a coupling region and a junction region, and a slab waveguide structure disposed on the semiconductor substrate and extending from the coupling region to the region. The slab waveguide includes a confinement layer disposed between a first cladding layer and a second cladding layer. The first cladding and the second cladding each have a refractive index that is lower than a refractive index of the confinement layer. Each pixel also includes a coupling structure disposed in the coupling region and within the slab waveguide. The coupling structure includes two materials having different indices of refraction arranged as a grating defined by a grating period. The junction region comprises a p-n junction in communication with electrical contacts for biasing and collection of carriers resulting from absorption of incident radiation.
21 Citations
34 Claims
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1. A 2-D sensor array, comprising:
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a semiconductor substrate, a plurality of pixels disposed on the semiconductor substrate, wherein each of the plurality of pixels comprise; at least one coupling region and at least one junction region; a slab waveguide structure disposed on the semiconductor substrate and extending from the at least one coupling region to the at least one junction region, and comprising a confinement layer disposed between a first cladding layer and a second cladding layer, wherein the first cladding and the second cladding each have a refractive index that is lower than a refractive index of the confinement layer; and at least one coupling structure disposed in the coupling region and within the slab waveguide, the coupling structure comprising at least two materials having different indices of refraction, and arranged as a grating defined by a grating period, wherein the junction region comprises a p-n junction in communication with electrical contacts for biasing and collection of carriers resulting from absorption of incident radiation. - View Dependent Claims (4, 6, 7, 9, 11, 12, 13, 14, 16, 17, 18, 19, 20, 21, 23, 25)
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2. (canceled)
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15. (canceled)
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27. (canceled)
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28. (canceled)
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29. (canceled)
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30. A CMOS-compatible photodetector comprising:
a first semiconductor layer doped with a first carrier type and comprising a plurality of posts, and a second semiconductor layer doped with a second carrier type configured with a plurality of holes extending through the second semiconductor layer, wherein at least one of the posts extends through a corresponding one of the plurality of holes in a honeycomb pattern, wherein the honeycomb pattern comprises a plurality of edge portions, each of the plurality of edge portions comprising a respective one of a depletion region area. - View Dependent Claims (31)
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32. (canceled)
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33. A method of detecting electromagnetic radiation, comprising:
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providing a 2-D sensor array, comprising; a semiconductor substrate comprising a plurality of pixels, wherein each of the plurality of pixels comprise; at least one coupling region and at least one junction region, a slab waveguide structure disposed on the semiconductor substrate and extending from the coupling region to the junction region, and a localized semiconductor layer forming at least one p-n junction with the semiconductor substrate in the junction region, wherein the slab waveguide comprises a confinement layer disposed between a first cladding layer and a second cladding layer, wherein the first cladding and the second cladding each have a refractive index that is lower than a refractive index of the confinement layer, and at least one grating disposed in the slab waveguide, the at least one grating comprising a grating period; coupling incoming light into the slab waveguide at the coupling region; propagating the light to the region over the junction area; decoupling the light such that it enters the junction region; and converting the light into at least one electron-hole pair; wherein the incoming light comprises at least one modulated waveform. - View Dependent Claims (34)
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Specification