Optical interconnects
First Claim
1. An optical interconnect comprising:
- a laser configured to output an optical signal;
a laser driver electronically coupled to the laser, wherein the laser driver induces the laser to output the optical signal in response to an electrical signal received by the laser driver;
a diffractive optical element positioned to receive the optical signal and configured to split the optical signal into a plurality of approximately identical optical signals received by a focusing optical element comprising a Fresnel lens surface and an opposing surface having a plurality of plano convex lenses; and
a photodetector array, wherein each photodetector of the photo detector array converts one of the plurality of optical signals into an electrical signal that is output on a separate signal line.
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Accused Products
Abstract
Various embodiments of the present invention are directed to optical interconnects. In one embodiment of the present invention, an optical interconnect comprises a laser configured to output an optical signal and a laser-diode driver electronically coupled to the laser. The laser-diode driver induces the laser to output the optical signal in response to an electrical signal received by the laser-diode driver. The optical interconnect includes a diffractive optical element and a plurality of photodetectors. The optical interconnect is positioned to receive the optical signal and configured to split the optical signal into a plurality of optical signals, and each photodetector converts one of the plurality of optical signals into an electrical signal that is output on a separate signal line.
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Citations
21 Claims
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1. An optical interconnect comprising:
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a laser configured to output an optical signal; a laser driver electronically coupled to the laser, wherein the laser driver induces the laser to output the optical signal in response to an electrical signal received by the laser driver; a diffractive optical element positioned to receive the optical signal and configured to split the optical signal into a plurality of approximately identical optical signals received by a focusing optical element comprising a Fresnel lens surface and an opposing surface having a plurality of plano convex lenses; and a photodetector array, wherein each photodetector of the photo detector array converts one of the plurality of optical signals into an electrical signal that is output on a separate signal line. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An optical interconnect comprising:
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a plurality of lasers, each laser configured to emit a corresponding optical signal, the optical signals of the lasers being emitted parallel to each other; a plurality of lasers drivers, each laser driver electronically coupled to one of the plurality of lasers such that each laser driver induces a corresponding laser to emit the corresponding optical signal in response to an electrical signal received by the laser driver; a plurality of separate electronic devices, each separate electronic device connected to one of the laser drivers, the electronic devices supplying the electrical signal to the laser drivers; a focusing element positioned to receive the plurality of parallel optical signals and direct them to a diffraction optical element to output a single optical signal; and a photo detector that converts the single optical signal into a single electrical signal that is output on a signal line. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. An optical interconnect system comprising:
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an electronic device; a stack of electronic devices; a fan-out interconnect interposed between the electronic device and the stack, the fan-out interconnect comprising; a single laser configured to output an optical signal; a diffractive optical element positioned to receive the optical signal and configured to split the optical signal into a plurality of approximately identical optical signals; and a photodetector array, wherein each photodetector of the photo detector array converts one of the plurality of approximately identical optical signals into an electrical signal that is output on a separate signal line of one of the electronic devices in the stack; and a fan-in interconnect comprising; a plurality of lasers, each laser configured to emit a corresponding optical signal; a plurality of laser drivers, each laser driver electronically coupled to one of the plurality of lasers such that each laser driver induces a corresponding laser to emit the corresponding optical signal in response to an electrical signal received by the laser driver from one of the electronic devices in the stack; a single focusing element positioned to receive the plurality of optical signals and output a single optical signal; and a photo detector that converts the single optical signal into a single electrical signal that is output on a signal line. - View Dependent Claims (18, 19, 20, 21)
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Specification