Abstract: VCSELs designed to emit light at a characteristic wavelength in a wavelength range of 910-2000 nm and formed on a silicon substrate are provided. Integrated VCSEL systems are also provided that include one or more VCSELs formed on a silicon substrate and one or more electrical, optical, and/or electro-optical components formed and/or mounted onto the silicon substrate. In an integrated VCSEL system, at least one of the one or more electrical, optical, and/or electro-optical components formed and/or mounted onto the silicon substrate is electrically or optically coupled to at least one of the one or more VSCELs on the silicon substrate. Methods for fabricating VCSELs on a silicon substrate and/or fabricating an integrated VCSEL system are also provided.

Abstract: A tunable vertical-cavity surface-emitting laser (VCSEL) is provided. The VCSEL includes a VCSEL emission structure, piezoelectric material, and a piezoelectric electrode. The VCSEL emission structure includes a first reflector; a second reflector; and an active cavity material structure disposed between the first and second reflectors. The active cavity material structure includes an active region. The piezoelectric material is mechanically coupled to the VCSEL emission structure such that when the piezoelectric material experiences a mechanical stress, the mechanical stress is transferred to the active cavity material structure of the VCSEL emission structure. The piezoelectric electrode is designed to cause an electric field within the piezoelectric material.

Abstract: An apparatus includes multiple ports, packet communication processing circuitry coupled to the ports, and a processor that is configured to receive, from the packet communication processing circuitry, metadata that is indicative of a temporal pattern of control messages communicated via one or more of the ports, and to identify a network attack by applying anomaly detection to the temporal pattern of the control messages.

Abstract: An optoelectronic device includes a substrate and first thin film layers disposed on the substrate and patterned to define a vertical-cavity surface-emitting laser (VCSEL), which is configured to emit optical radiation along an optical axis perpendicular to the substrate. Second thin film layers are disposed over the first thin film layers and are patterned to define an optical modulator in which the optical radiation propagates in a direction parallel to the substrate, and an optical coupler configured to couple the optical radiation from the VCSEL into the optical modulator.

Abstract: An optoelectronic transmitter (10) includes an electro-optic modulator (12), digital driving circuitry (14), and feedback circuitry (30). The electro-optic modulator is configured to modulate an optical signal in response to an electrical drive signal. The digital driving circuitry is coupled to the electro-optical modulator and is configured to generate the electrical drive signal. The feedback circuitry is configured to measure a quantity indicative of a power level of the modulated optical signal produced by the electro-optic modulator, and to adapt a supply voltage to the digital driving circuitry in response to the measured quantity.

Abstract: Embodiments are disclosed for driving a vertical cavity surface emitting laser (VCSEL). An example method includes injecting, via a universal driver, a direct current (DC) bias current to a VCSEL. The VCSEL is configured to convert the modulated signal into an optical signal encoding one or more bits. The example method further includes providing a modulated signal to the VCSEL. The modulated signal encodes a digital sequence comprising the one or more bits using a modulation method.

Abstract: Embodiments are disclosed for facilitating quantum computing over classical and quantum communication channels. An example system includes a network interface card (NIC) apparatus. The NIC apparatus includes an optical receiver, an embedded processor, and a network switch. The optical receiver is configured to receive qubit data via a first communication channel associated with quantum communication. The embedded processor is configured to convert the qubit data into binary bit data. The network switch is configured to output the binary bit data via a second communication channel associated with classical network communication.

Abstract: A system comprises a transmitter including first circuitry that generates a first frame of a first type for establishing a quantum-secure link with an endpoint according to a security protocol, a data source that generates a second frame of a second type for communicating data to the endpoint, an output that couples to the endpoint via a first communication channel, and second circuitry. The second circuitry selects either the first frame or the second frame, adds information to the selected frame that identifies the selected frame as being of the first type or the second type to form an output frame, and outputs the output frame to the output.

Abstract: Systems, data processing systems, and methods, among other things, are disclosed. An illustrative system includes an encryption orchestrator that analyzes a packet, obtains a tenant identifier (ID) from the packet, determines whether a tenant associated with the tenant ID currently has sufficient encryption credit available, and enables an encryption resource to process the packet using an encryption key associated with the tenant ID in response to determining that the tenant associated with the tenant ID currently has sufficient encryption credit available.

Abstract: Apparatuses, systems, and associated methods are described that provide an optical device with sealed optoelectronic component(s) without impacting effective optical performance of the optical device. An example optical device includes a substrate that defines a first surface and a second surface opposite the first surface. The optical device further includes an optoelectronic component supported by the first surface of the substrate where the optoelectronic component operates with optical signals. The optical device further includes a conformal coating applied to the first surface of the substrate such that at least a portion of the conformal coating is disposed on the optoelectronic component. The conformal coating substantially seals the optoelectronic component from an external environment of the optical device without impacting effective optical performance of the optical device.

Abstract: Embodiments are disclosed for a quantum key distribution enabled intra-datacenter network. An example system includes a first vertical cavity surface emitting laser (VCSEL), a second VCSEL and a network interface controller. The first VCSEL is configured to emit a first optical signal associated with data. The second VCSEL is configured to emit a second optical signal associated with quantum key distribution (QKD). Furthermore, the network interface controller is configured to manage transmission of the first optical signal associated with the first VCSEL and the second optical signal associated with the second VCSEL via an optical communication channel coupled to a network interface module.

Abstract: A vertical-cavity surface-emitting laser (VCSEL) is provided that includes a mesa structure disposed on a substrate. The mesa structure defines an emission axis of the VCSEL. The mesa structure includes a first reflector, a second reflector, and a cascaded active region structure disposed between the first reflector and the second reflector. The cascaded active region structure includes a plurality of cascaded active region layers disposed along the emission axis, where each of the cascade active region layers includes an active region having multi-quantum well and/or dots layers (MQLs), a tunnel junction aligned with the emission axis, and an oxide confinement layer. The oxide confinement layer is disposed between the tunnel junction and MQLs, and has an electrical current aperture defined therein. The mesa structure defines an optical window through which the VCSEL is configured to emit light.

Abstract: A system comprises a first processing block configured to receive, from a first local resource, a formatted transaction in a format that is not recognizable by a remote endpoint; determine a first transaction category, from among a plurality of transaction categories, of the formatted transaction based on content of the formatted transaction; perform one or operations on the formatted transaction based on the first transaction category to form a reformatted transaction in a format that is recognizable by the remote endpoint; and place the reformatted transaction in a queue for transmission to the remote endpoint.

Abstract: A VCSEL includes an active region between a top distributed Bragg reflector (DBR) and a bottom DBR each having alternating GaAs and AlGaAs layers. The active region includes quantum wells (QW) confined between top and bottom GaAs-containing current-spreading layers (CSL), an aperture layer having an optical aperture and a tunnel junction layer above the QW. A GaAs intermediate layer configured to have an open top air gap is disposed over a boundary layer of the active region and the top DBR. The air gap is made wider than the optical aperture and has a height equal to one quarter of VCSEL's emission wavelength in air. The top DBR is attached to the intermediate layer by applying wafer bonding techniques. VCSEL output, the air gap, and the optical aperture are aligned on the same optical axis. The bottom DBR is epitaxially grown on a silicon or a GaAs substrate.

Abstract: Apparatuses, systems, and associated methods are described that provide an optical device with sealed optoelectronic component(s) without impacting effective optical performance of the optical device. An example optical device includes a substrate that defines a first surface and a second surface opposite the first surface. The optical device further includes an optoelectronic component supported by the first surface of the substrate where the optoelectronic component operates with optical signals. The optical device further includes a conformal coating applied to the first surface of the substrate such that at least a portion of the conformal coating is disposed on the optoelectronic component. The conformal coating substantially seals the optoelectronic component from an external environment of the optical device without impacting effective optical performance of the optical device.

Abstract: A network adapter includes a host interface and a scheduler. The host interface is configured to receive, from one or more hosts, packets for transmission to respective destinations over a network. The scheduler is configured to synchronize to a time-division schedule that is employed in the network, the time-division schedule specifying (i) multiple time-slots and (ii) multiple respective groups of the destinations that are reachable during the time-slots, and, based on the time-division schedule, to schedule transmission times of the packets to the network on time-slots during which the respective destinations of the packets are reachable.

Abstract: A computing entity is described that obtains at least one inspection image of an at least partially fabricated product and causes the at least one inspection image to be processed by a product inspection engine. The product inspection engine includes a machine learning-trained model. The computing entity obtains an inspection result determined based on the processing of the at least one inspection image by the product inspection engine; identifies one or more training images stored in an image database based at least in part on the at least one inspection image; associates automatically generated labeling data with the one or more training images based at least in part on the inspection result determined by the processing of the at least one inspection image; and causes training of the product inspection engine using the one or more training images and the associated labeling data.

Abstract: Switches for performing packet switching and associated methods are provided. An example switch includes an ingress port for receiving a packet. The switch includes a plurality of egress ports for discharging the packet from the switch. The switch includes a plurality of egress queues with each egress queue associated with one of the plurality of egress ports. The switch includes a control plane configured to determine a descriptor associated with a packet, determine a first egress port from which to discharge the at least one packet and to transmit the descriptor to an egress queue associated with the first egress port. The switch includes a descriptor crossbar configured to transmit the descriptor from the egress queue to a second egress port of the plurality of egress ports. The switch includes a packet crossbar configured to transmit the at least one packet from the ingress port to the second egress port.

Abstract: In one embodiment, a secure computing system comprises a key generation sub-system configured to generate cryptographic keys and corresponding key labels for distribution to computer clusters, each computer cluster including a plurality of respective endpoints, a plurality of quantum key distribution (QKD) devices connected via respective optical fiber connections, and configured to securely distribute the generated cryptographic keys among the computer clusters, and a key orchestration sub-system configured to manage caching of the cryptographic keys in advance of receiving key requests from applications running on ones of the endpoints, and provide respective ones of the cryptographic keys to the applications to enable secure communication among the applications.

Abstract: A transceiver comprises a transmitter including a light source, a modulator coupled to the light source, a driver that drives the modulator according to a set of driving conditions to cause the modulator to output optical signals based on light from the light source, and an output that passes first portions of the optical signals output by the modulator. The transceiver further comprises a first detector that detects second portions of the optical signals output from the modulator, and a receiver including a second detector that detects optical signals from an external transmitter.