Optoelectronic integrated circuit
First Claim
1. An optoelectronic integrated circuit comprising:
- a body of Group III-V semiconductor materials including a N type FET active layer along a surface thereof and a optically active layer extending across the body parallel to and spaced from the FET active layer, said optically active layer being of a semiconductor material which is capable of generating light of a wavelength longer than can be absorbed in the material of the FET active layer;
a field effect transistor in said FET active layer; and
a laser diode in said body including the optically active layer.
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Accused Products
Abstract
The present invention relates to an optoelectronic integrated circuit having a substantially planar surface and which includes at least one laser diode and at least one field effect transistor. The integrated circuit comprises a substrate of semi-insulating GaAs having on a surface thereof in succession a first clad layer, a first confinement layer, a quantum well active layer, a second confinement layer, a second clad layer and an FET active layer. The FET active layer is of a material having good field effect transistor characteristics, such as N type GaAs or N type A1GaAs over a layer of undoped GaAs. The quantum well active layer is formed of alternating layers of undoped GaAs and a material which is capable of generating light of a wavelength longer than can be absorbed by the FET active layer, such as undoped InGaAs. The laser diode includes spaced contact regions of opposite conductivity type extending through the layers to the quantum well active layer. The field effect transistor comprises a groove in the FET active layer, a gate in the groove on the FET active layer and having a Schottky barrier contact with the FET active layer, and source and drain contacts on the FET active layer at opposite sides of the groove.
59 Citations
28 Claims
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1. An optoelectronic integrated circuit comprising:
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a body of Group III-V semiconductor materials including a N type FET active layer along a surface thereof and a optically active layer extending across the body parallel to and spaced from the FET active layer, said optically active layer being of a semiconductor material which is capable of generating light of a wavelength longer than can be absorbed in the material of the FET active layer; a field effect transistor in said FET active layer; and a laser diode in said body including the optically active layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An optoelectronic integrated circuit comprising:
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a substrate of semi-insulating GaAs having a surface; a first clad layer on the substrate surface; a laser quantum well layer over the first clad layer; a second clad layer over the quantum well layer; an FET active layer of a Group III-V semiconductor material over the second clad layer; a field effect transistor in said FET active layer; and a laser diode including said clad layers and the quantum well layer; said quantum well layer including a Group III-V semiconductor material which is capable of generating light of a wavelength longer than can be absorbed by the material of the FET active layer. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification