Abstract: The present invention relates to a method of manufacturing large area graphene for graphene-based photonics devices such as bolometric graphene detectors, or for use as a saturable absorber in ultra-high bandwidth detectors for producing ultrafast laser pulses. The method includes: growing a first graphene layer on one side of a metal substrate, and a second graphene layer on another side of the metal substrate; coating the first graphene layer with a plurality of resist layers including a low molecular weight polymethylmethacrylate, and a high molecular weight polymethylmethacrylate; removing the second graphene layer and the metal substrate to reveal the first graphene layer; disposing the first graphene layer on an optical substrate; and removing the plurality of resist layers from the first graphene layer to reveal a final graphene layer, which can be used as the basis to manufacture a multilayer graphene structure for graphene detectors.

Abstract: The present invention relates an apparatus and method for measuring range-resolved atmospheric sodium temperature profiles using a space-based Lidar instrument, including a diode-pumped Q-switched self-Raman c-cut Nd:YVO4 laser with intra-cavity frequency doubling that could produce multi-watt 589 nm wavelength output. The c-cut Nd:YVO4 laser has a fundamental wavelength that is tunable from 1063-1067 nm. A continuous wave narrow linewidth diode laser is used as an injection seeder to provide single-frequency grating tunable output around 1066 nm. The injection-seeded self-Raman shifted Nd:VO4 laser is tuned across the sodium vapor D2 line at 589 nm. In one embodiment, a space-qualified frequency-doubled 9 Watt at 532 nm wavelength Nd:YVO4 laser, is utilized with a tandem interference filter temperature-stabilized fused-silica-etalon receiver and high-bandwidth photon-counting detectors.

Abstract: A sensor assembly for attachment underneath a screen of a combine harvester is provided with a plurality of sensor units having sensor elements, a plurality of which sensor units are arranged one behind the other within a hollow profile which extends in the longitudinal direction of the screen.

Abstract: A surge protection device for providing bidirectional detections of one or more surge events. The device has low dynamic resistance during a surge protection mode, and it conducts ultra-low leakage current outside of the surge protection mode. In one implementation, the device includes first and second power transistors, a sensing circuit, and a driver circuit. The first power transistor includes a first source terminal that is coupled to the substrate, and the second power transistor includes a second source terminal that is coupled to the substrate. The sensing circuit is configured to detect a voltage of the first pin relative to the second pin and generate a sense signal when the voltage exceeds a threshold. The driver circuit is configured to generate a driver signal based on the sense signal and output the driver signal to at least one of the first or second gate terminal.

Abstract: The disclosed subject matter relates to a polarization-maintaining very large mode area (PM VLMA) Erbium-doped fiber and a polarization maintaining, Er-doped VLMA amplifier.

Abstract: In described examples, a power interface subsystem includes power transistors, each having: a conduction path coupled between a battery terminal and an accessory terminal; and a control terminal. A differential amplifier has: a first input coupled to the battery terminal; a second input coupled to the accessory terminal; and an output node. An offset voltage source is coupled to cause an offset of a selected polarity at one of the inputs to the differential amplifier. The offset has a first polarity in a first operating mode and a second polarity in a second operating mode. Gate control circuitry is coupled to apply a control level at the control terminal(s) of selected one(s) of the power transistors responsive to a voltage at the output node, and to apply an off-state control level to the control terminal(s) of unselected one(s) of the power transistors.

Abstract: Some embodiments provide a method of providing information to a third-party service. From the third-party service, the method receives a request for information regarding a particular device that is transacting with the third-party service. The request includes data encrypted by the particular device that is inaccessible to the third-party service. The method accesses the encrypted data to determine a unique identifier of the particular device. The method uses the unique identifier to determine the requested information. The method provides the requested information to the third-party service without providing an identity of the device to the third-party service.

Abstract: In described examples, a power interface subsystem includes power transistors, each having: a conduction path coupled between a battery terminal and an accessory terminal; and a control terminal. A differential amplifier has: a first input coupled to the battery terminal; a second input coupled to the accessory terminal; and an output node. An offset voltage source is coupled to cause an offset of a selected polarity at one of the inputs to the differential amplifier. The offset has a first polarity in a first operating mode and a second polarity in a second operating mode. Gate control circuitry is coupled to apply a control level at the control terminal(s) of selected one(s) of the power transistors responsive to a voltage at the output node, and to apply an off-state control level to the control terminal(s) of unselected one(s) of the power transistors.

Abstract: The side profile of a hard drive assembly may be configured with one or more open areas to allow cooling air to pass side-to-side across the hard drive assembly through a lateral flow channel provided by a cavity defined in the base portion of the hard drive assembly.

Abstract: A fluid reservoir for a fluid infusion device is provided. The fluid reservoir includes a first portion that has a first end and a second end. The first end includes a fluid delivery port and at least one bubble retaining feature adjacent to the fluid delivery port. The fluid reservoir includes a second portion received in the second end of the first portion and movable within the first portion from the first end to the second end. The fluid reservoir defines a fluid chamber between the first portion and the second portion.

Abstract: A system for filling a fluid reservoir of a fluid infusion device with a fluid is provided. The system includes the fluid reservoir having a first portion and a second portion. A fluid chamber is defined between the first portion and the second portion. The second portion is movable within the first portion and includes an interface. The system includes a transfer guard having a first end and a second end. The first end to be coupled to a source of the fluid and the second end having at least one locking member that couples to the interface. The transfer guard defines a fluid flow path for the fluid from the source, and the transfer guard is movable relative to the first portion to fill the fluid chamber with the fluid.

Abstract: The present invention relates an apparatus and method for measuring range-resolved atmospheric sodium temperature profiles using a space-based Lidar instrument, including a diode-pumped Q-switched self-Raman c-cut Nd:YVO4 laser with intra-cavity frequency doubling that could produce multi-watt 589 nm wavelength output. The c-cut Nd:YVO4 laser has a fundamental wavelength that is tunable from 1063-1067 nm. A continuous wave narrow linewidth diode laser is used as an injection seeder to provide single-frequency grating tunable output around 1066 nm. The injection-seeded self-Raman shifted Nd:VO4 laser is tuned across the sodium vapor D2 line at 589 nm. In one embodiment, a space-qualified frequency-doubled 9 Watt at 532 nm wavelength Nd:YVO4 laser, is utilized with a tandem interference filter temperature-stabilized fused-silica-etalon receiver and high-bandwidth photon-counting detectors.

Abstract: The present invention relates to a method of manufacturing large area graphene for graphene-based photonics devices such as bolometric graphene detectors, or for use as a saturable absorber in ultra-high bandwidth detectors for producing ultrafast laser pulses. The method includes: growing a first graphene layer on one side of a metal substrate, and a second graphene layer on another side of the metal substrate; coating the first graphene layer with a plurality of resist layers including a low molecular weight polymethylmethacrylate, and a high molecular weight polymethylmethacrylate; removing the second graphene layer and the metal substrate to reveal the first graphene layer; disposing the first graphene layer on an optical substrate; and removing the plurality of resist layers from the first graphene layer to reveal a final graphene layer, which can be used as the basis to manufacture a multilayer graphene structure for graphene detectors.

Abstract: In described examples, a power interface subsystem includes power transistors, each having: a conduction path coupled between a battery terminal and an accessory terminal; and a control terminal. A differential amplifier has: a first input coupled to the battery terminal; a second input coupled to the accessory terminal; and an output node. An offset voltage source is coupled to cause an offset of a selected polarity at one of the inputs to the differential amplifier. The offset has a first polarity in a first operating mode and a second polarity in a second operating mode. Gate control circuitry is coupled to apply a control level at the control terminal(s) of selected one(s) of the power transistors responsive to a voltage at the output node, and to apply an off-state control level to the control terminal(s) of unselected one(s) of the power transistors.

Abstract: The side profile of a hard drive assembly may be configured with one or more open areas to allow cooling air to pass side-to-side through a lateral flow channel provided by a cavity defined in the base portion of the hard drive assembly. Corresponding and complementary open areas may be also be defined in mating drive carrier assembly side components to allow passage of lateral side-to-side cooling air through the base portion flow channel of a hard drive assembled to the drive carrier assembly to form a mountable hard drive system that is installed into a storage enclosure. The at least partially aligned open flow areas of the assembled hard dive assembly and drive carrier assembly may cooperate to reduce air flow impedance across multiple rows of hard drive systems through a storage enclosure.

Abstract: The side profile of a hard drive assembly may be configured with one or more open areas to allow cooling air to pass side-to-side through a lateral flow channel provided by a cavity defined in the base portion of the hard drive assembly. Corresponding and complementary open areas may be also be defined in mating drive carrier assembly side components to allow passage of lateral side-to-side cooling air through the base portion flow channel of a hard drive assembled to the drive carrier assembly to form a mountable hard drive system that is installed into a storage enclosure. The at least partially aligned open flow areas of the assembled hard dive assembly and drive carrier assembly may cooperate to reduce air flow impedance across multiple rows of hard drive systems through a storage enclosure.

Abstract: The present invention provides a dynamic power spectrum management method, a spectrum optimization system, and a client device, which can improve spectrum management. The method includes: calculating, from a tax factor containing user crosstalk information, a water-filling parameter corresponding to the case that total power of each user is below or equal to a threshold of total power of the user; calculating, from the water-filling parameter, power allocated to each user in each sub-carrier until convergence is attained for all users. Correspondingly, the present invention further provides a spectrum optimization system and a client device. In effect, the present invention can improve the spectrum management.

Abstract: A method and apparatus for a connection interface between a reservoir or syringe, infusion set tubing, and an infusion pump is provided. The reservoir, a base and a cap are connected to form an integrated unit that is capable of being inserted and secured in an infusion pump housing. The cap and the infusion pump are each provided with at least one sensor or at least one detectable feature, arranged to interact with at least one corresponding detectable feature or sensor on the other of the cap and infusion pump device, to detect one or more of the presence, position or other characteristic of the cap when the cap is aligned or coupled with the infusion pump housing. The detectable feature and sensor may be magnetic, RF, mechanical, optical or any combination.

Abstract: A method and apparatus for a connection interface between a reservoir or syringe, infusion set tubing, and an infusion pump is provided. The reservoir, a base and a cap are connected to form an integrated unit that is capable of being inserted and secured in an infusion pump housing. The cap and the infusion pump are each provided with at least one sensor or at least one detectable feature, arranged to interact with at least one corresponding detectable feature or sensor on the other of the cap and infusion pump device, to detect one or more of the presence, position or other characteristic of the cap when the cap is aligned or coupled with the infusion pump housing. The detectable feature and sensor may be magnetic, RF, mechanical, optical or any combination.