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US 12,615,862 B2Granted
Photo-detecting apparatus
AssigneeArtilux, Inc.
InventorsChien-Yu Chen, Yun-Chung Na, Szu-Lin Cheng, Ming-Jay Yang, Han-Din Liu, Che-Fu Liang
Life of this patent
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Abstract
A photo-detecting apparatus includes an absorption layer configured to absorb photons and to generate photo-carriers from the absorbed photons, wherein the absorption layer includes germanium. A carrier guiding unit is electrically coupled to the absorption layer, wherein the carrier guiding unit includes a first switch including a first gate terminal.
Claims20
A photo-detecting apparatus, comprising:
- a substrate;
- a first absorption layer over the substrate and configured to absorb photons having a first peak wavelength and to generate photo-carriers from the absorbed photons;
- a first bonding structure between the substrate and the first absorption layer;
- a second absorption layer over the substrate and configured to absorb photons and to generate photo-carriers from the absorbed photons, wherein the second absorption layer is configured to absorb photons having a second peak wavelength different from the first peak wavelength;
- a second bonding structure between the substrate and the second absorption layer;
- and
- a first carrier guiding unit and a second carrier guiding unit integrated with the substrate, wherein the first carrier guiding unit is electrically coupled to the first absorption layer, and the second carrier guiding unit is electrically coupled to the second absorption layer,
- wherein each of the first carrier guiding unit and the second carrier guiding unit further comprises a first switch and a second switch physically separated from the first switch, the first bonding structure is electrically coupled to the first switch and the second switch of the first carrier guiding unit, and the second bonding structure is electrically coupled to the first switch and the second switch of the second carrier guiding unit.
5 more elements
A photo-detecting system, comprising:
- a laser diode configured to transmit an optical signal;
- a laser diode driver configured to control the laser diode;
- a photo-detecting array comprising multiple photo-detecting apparatus supported by a substrate, wherein one of the photo-detecting apparatus comprises:
- a first absorption layer over the substrate and configured to absorb photons having a first peak wavelength and to generate photo-carriers from the absorbed photons;
- a first bonding structure between the substrate and the first absorption layer;
- a second absorption layer over the substrate and configured to absorb photons and to generate photo-carriers from the absorbed photons, wherein the second absorption layer is configured to absorb photons having a second peak wavelength different from the first peak wavelength;
- a second bonding structure between the substrate and the second absorption layer;
- and
- a first carrier guiding unit and a second carrier guiding unit integrated with the substrate, wherein the first carrier guiding unit is electrically coupled to the first absorption layer, and the second carrier guiding unit is electrically coupled to the second absorption layer,
- wherein each of the first carrier guiding unit and the second carrier guiding unit further comprises a first switch and a second switch physically separated from the first switch, the first bonding structure is electrically coupled to the first switch and the second switch of the first carrier guiding unit, and the second bonding structure is electrically coupled to the first switch and the second switch of the second carrier guiding unit.
7 more elements
A photo-detecting apparatus, comprising:
- a substrate;
- a first absorption layer over the substrate and configured to absorb photons having a first peak wavelength and to generate photo-carriers from the absorbed photons;
- a first bonding structure between the substrate and the first absorption layer;
- a second absorption layer over the substrate and configured to absorb photons and to generate photo-carriers from the absorbed photons, wherein the second absorption layer is configured to absorb photons having a second peak wavelength different from the first peak wavelength;
- a second bonding structure between the substrate and the second absorption layer;
- and
- a first carrier guiding unit and a second carrier guiding unit integrated with the substrate, wherein the first carrier guiding unit is electrically coupled to the first absorption layer, and the second carrier guiding unit is electrically coupled to the second absorption layer,
- wherein each of the first absorption layer and the second absorption layer comprises a first region of a first conductivity type and a first zone of a second conductivity type different from the first conductivity type, and
- wherein the first zone and the first region of the first absorption layer are arranged at opposite sides of the first absorption layer, or the first zone and the first region of the second absorption layer are arranged at opposite sides of the second absorption layer.
6 more elements
Dependencies are inferred from the claim text.