Abstract: A method includes providing input data to one or more machine-learning models to generate output data. The input data includes an input value for each of N features associated, and the output data includes a predicted value of each of M features. The method further includes determining M sets of feature relevance values including a set of feature relevance values for each of the M predicted values. A particular set of feature relevance values is associated with a particular predicted value, and each feature relevance value of the particular set of feature relevance values represents an estimate of a contribution of a respective one of the N input values to the particular predicted value. The method also includes aggregating feature relevance values to generate N aggregate feature relevance values and characterizing the operating state of the monitored asset based on the N aggregate feature relevance values.

Abstract: A laser-based molecular sequencing system includes a two-dimensional photonic crystal surface emitting laser (PCSEL) array including a plurality of PCSEL devices located in a first layer, each PCSEL device oriented in a direction perpendicular to the first layer. The system also includes a controller configured to modulate a bias on at least one PCSEL device of the plurality of PCSEL devices, the modulation configured to selectively operate each PCSEL device as an emitter or detector at a point in time based on the bias.

Abstract: An active metasurface that provides low-loss and high-bandwidth modulation control of light includes a number of cells arranged on a substrate. A controller dynamically alters a voltage differential supplied to the electrodes of each of the cells is adapted to alter refractive index of each of the high-index dielectric blocks in order to controllably steer light exiting the cell.

Abstract: A laser-based computing system includes a two-dimensional photonic crystal surface emitting laser (PCSEL) array including a plurality of PCSEL emitters located in a first layer, each emitter oriented in a direction perpendicular to a plane formed by the first layer, where the plurality of PCSEL emitters form a preset pattern within the first layer, and a controller operatively connected to the plurality of PCSEL emitters, the controller configured to modulate phase and/or amplitude of a beam emitted by a PCSEL emitter of the plurality of PCSEL emitters.

Abstract: Systems and techniques for facilitating card authentication technique selection via machine learning are provided. In various embodiments, a processor can access an attribute vector associated with a financial payment card. In various instances, the processor can determine, via execution of a machine learning model, whether to authenticate the financial payment card with a zero-dollar authentication technique or instead with a tokenization authentication technique, based on the attribute vector. In various cases, the processor can execute the zero-dollar authentication technique with respect to the financial payment card, when the processor determines that the financial payment card should be authenticated with the zero-dollar authentication technique.

Abstract: A metasurface includes a plurality of Bragg mirrors, each having a defect cavity therein, arrayed in a grid. A heat source is provided for each of the plurality of Bragg mirrors. Each heat source is positioned to selectively modulate heat applied to its respective Bragg mirror and to impart a different phase shift via the applied heat from the heat source.

Abstract: Implementations described and claimed herein provide an example LiDAR architecture that facilitates low-cost alignment of solid state components. The system includes at least a transceiver chip, a laser, and a u-shaped optical amplifier. The transceiver chip includes a signal preparation block that receives light from the laser and that modulates the laser light. The u-shaped optical amplifier is positioned to receive a light signal output from the signal preparation block and to output an amplified light signal back into the transceiver chip.

Abstract: Systems and techniques for facilitating card authentication technique selection via machine learning are provided. In various embodiments, a processor can access an attribute vector associated with a financial payment card. In various instances, the processor can determine, via execution of a machine learning model, whether to authenticate the financial payment card with a zero-dollar authentication technique or instead with a tokenization authentication technique, based on the attribute vector. In various cases, the processor can execute the zero-dollar authentication technique with respect to the financial payment card, when the processor determines that the financial payment card should be authenticated with the zero-dollar authentication technique.

Abstract: An active metasurface that provides low-loss and high-bandwidth modulation control of light includes a number of cells arranged on a substrate. A controller dynamically alters a voltage differential supplied to the electrodes of each of the cells is adapted to alter refractive index of each of the high-index dielectric blocks in order to controllably steer light exiting the cell.

Abstract: A predistorter for an electro-optical converter includes a plurality of low noise RF amplifiers distributed along a transmission line that receive an RF input. Second order intermodulation injection (IM2) circuitry includes an inductively-degenerated frequency doubler to square and filter IM2 products of the RF input. A Mach-Zehnder Modulator (MZM) is used for electro-optical conversion. Feed forward circuitry injects IM2 to independently propagate RF intermodulation components with velocity matching to the MZM. At least one driver injects the RF input and RF intermodulation components into the MZM.

Abstract: An active metasurface that provides low-loss and high-bandwidth modulation control of light includes a number of cells arranged on a substrate. A controller dynamically alters a voltage differential supplied to the electrodes of each of the cells is adapted to alter refractive index of each of the high-index dielectric blocks in order to controllably steer light exiting the cell.

Abstract: Systems and techniques for facilitating card authentication technique selection via machine learning are provided. In various embodiments, a processor can access an attribute vector associated with a financial payment card. In various instances, the processor can determine, via execution of a machine learning model, whether to authenticate the financial payment card with a zero-dollar authentication technique or instead with a tokenization authentication technique, based on the attribute vector. In various cases, the processor can execute the zero-dollar authentication technique with respect to the financial payment card, when the processor determines that the financial payment card should be authenticated with the zero-dollar authentication technique.

Abstract: A waveguide grating antenna apparatus includes a substrate layer, a lower waveguide array layer upon the substrate, and an upper waveguide array layer positioned above the lower waveguide array layer. The lower waveguide array layer is composed of a plurality of first waveguides extending axially and a plurality of second waveguides extending axially and arranged in parallel and alternating in position with the plurality of first waveguides across the lower waveguide array layer. Each first waveguide is of a first maximum width. Each second waveguide is of a second maximum width narrower than the first maximum width and is spaced apart from each adjacent first waveguide. The upper waveguide array layer is composed of adjacent, separated elements extending axially along each first waveguide and each second waveguide.

Abstract: Systems, devices, and methods may use input/output (I/O) apparatus and an optical switching medium to switch, or route, optical data signals. The optical switching medium may include a plurality of optical switching regions. The I/O apparatus may transmit optical data signals to and receive optical data signals from the optical switching medium to provide switching functionality.

Abstract: A method and a system for controlling at least one Internet of Things (IoT) device is described. The method includes identifying a current user activity associated with each of the at least one IoT device, detecting a non-speech sound during the identified current user activity, predicting a user action based on the detected non-speech sound, wherein the predicted user action impacts the current user activity, and automatically adjusting an operational setting of the at least one IoT device to minimize the impact on the current user activity, based on initiation of the predicted user action.

Abstract: A waveguide grating antenna apparatus includes a substrate layer, an asymmetric waveguide array layer upon the substrate layer, and a waveguide grating array layer formed above the asymmetric waveguide array layer. The waveguide array layer is composed of two forms of waveguide structures arranged in parallel. Each waveguide of the first form extends continuously, has a first width, and is laterally separated from each adjacent waveguide of the first form by a gap distance. Each waveguide of the second form extends parallel to and between adjacent waveguides of the first form within the first gap distance and is narrower than each of the first width and the gap distance. Pairs of the second form are closer to lateral sides of a first alternating set of the first form. The waveguide grating is composed of adjacent, separated elements extending axially along each waveguide of the first form.

Abstract: Implementations described and claimed herein provide a high-capacity, high-bandwidth scalable storage device. The scalable storage device includes a layer stack including at least one memory layer and at least one optical control layer positioned adjacent to the memory layer. The memory layer includes a plurality of memory cells and the optical control layer is adapted to receive optically-encoded read/write signals and to effect read and write operations to the plurality of memory cells through an electrical interface.

Abstract: Systems and techniques for facilitating card authentication technique selection via machine learning are provided. In various embodiments, a processor can access an attribute vector associated with a financial payment card. In various instances, the processor can determine, via execution of a machine learning model, whether to authenticate the financial payment card with a zero-dollar authentication technique or instead with a tokenization authentication technique, based on the attribute vector. In various cases, the processor can execute the zero-dollar authentication technique with respect to the financial payment card, when the processor determines that the financial payment card should be authenticated with the zero-dollar authentication technique.

Abstract: An active metasurface includes a number of periodically-repeated unit cells arranged on a substrate that each include a plasmonic waveguide shaped and sized to provide a cutoff mode that captures light of a target wavelength. The active metasurface includes an index modulation controller that controllably varies a voltage differential across each one of the periodically-repeated cells to change a phase of light incident on the metasurface.

Abstract: Apparatus and method for transferring data in a data storage system, such as but not limited to a hard disc drive (HDD). An optical link is provided between an analog front end (AFE) of a data storage device controller circuit (SOC) and a preamplifier/driver circuit (preamp) mounted to a rotary actuator to transfer an analog domain signal. A selected component is extracted from the signal using a modulation element such as a micro-resonance ring (MRR) or a Mach-Zehnder Interferometer Modulation (MZM) device. The extracted component is forwarded to a processing circuit to facilitate a transfer of data between a local memory and a non-volatile memory (NVM). The optical link includes a flexible portion in a flex circuit affixed to the rotary actuator and which supports the preamp. Multiplexed read, write, and power control signals are concurrently transmitted via the optical link. The link can concurrently service multiple head-disc assemblies (HDAs).