Abstract: An apparatus includes an optical rib waveguide on a substrate, the optical rib waveguide further includes: a slab layer of silicon, a shallow rib of silicon in height that tapers laterally along a taper region, a deep rib of silicon that meets the shallow rib along the taper region of the shallow rib, and wherein the deep rib and the shallow rib have a same width, and wherein the shallow rib has a greater height than the deep rib, a core of silicon that tapers laterally in a range of 50-90% and extends on top of the deep rib and the shallow rib, and a cladding layer of silicon oxide that covers the slab, core, deep rib, and shallow rib.

Abstract: In the examples provided herein, a vascular pattern recognition system integrated onto a portable card includes a vascular pattern detection system to obtain image data of blood vessels of a finger to be swiped across a detection area on the portable card, wherein the vascular pattern detection system includes a near infrared light source and an image sensor array. The vascular pattern recognition system also includes an image processor to process the image data to generate a scanned vascular pattern and compare the scanned vascular pattern to a pre-stored pattern stored on the portable card to authenticate the image data, and a security processor to generate a transaction code to authorize a transaction upon authentication of the image data.

Abstract: A circuit includes a startup circuit to provide a charging signal to initiate startup of a reference circuit. The startup circuit includes a detector circuit having a detector current path control, a level shifter having a level shifter current path control, and a charger circuit having a charger current path control. Each of the detector current path control, the level shifter current path control, and the charger circuit current path control enable current flow in the startup circuit when the charger turn-on signal is in the on-state and disable the current flow in the startup circuit when the charger turn-on signal is in the off state.

Abstract: In one example, a device includes a bus waveguide to carry a light of a carrier wavelength, a first ring waveguide with a first modulator, a first heater to adjust a resonance wavelength of the first ring waveguide, and a second ring waveguide with a second modulator. The first ring waveguide and the second ring waveguide are coupled to the bus waveguide and are to modulate the light of the carrier wavelength to impart one of at least four optical power levels to the light. In another example, a device includes, a bus waveguide, a first ring waveguide with a first modulator, and a second ring waveguide with a second modulator. The first ring waveguide and the second ring waveguide are coupled to the bus waveguide and are to modulate a light of a carrier wavelength to impart one of at least four optical power levels to the light.

Abstract: An active-control optical resonator includes an oxide layer; a ring resonator arranged in a loop and positioned on the oxide layer; a tangential optical waveguide optically coupled to the ring resonator; a translatable body configured to selectively move into an evanescent field region of the ring resonator; a first electrode positioned on the translatable body, the first electrode comprising indium tin oxide; and a second electrode positioned between the oxide layer and the ring resonator.

Abstract: Examples described herein relate to a driver circuit. In an example, the circuit includes a first input for receiving a first signal and a second input for receiving a second signal that is an inverse of the first signal. The circuit also includes a first driver array electrically coupling the first input to a first DC isolator and a first delay tap line electrically coupling the second input to the first DC isolator. The circuit further includes a second driver array electrically coupling the second input to a second DC isolator and a second delay tap line electrically coupling the first input to the second DC isolator. A carrier controller of the circuit is electrically coupled between the first DC isolator and the second DC isolator.

Abstract: An automatic angle-measured apparatus includes a driving unit coupled with a clamping plate and a driving seat, an encoding unit located at an end of the driving unit facing the driving seat and signally connected to the driving unit, at least one attitude sensor located at the driving seat, and a control unit signally connected to the encoding unit and the attitude sensor. The attitude sensor senses the un-rotated and the rotated driving seat to generate a first and a second signals, respectively. The control unit bases on the first and the second signals to calculate an offset. The control unit controls the driving unit to rotate a predetermined angle. The encoding unit bases on the predetermined angle to generate location information. The control unit bases on the first signal, the second signal and the location information to calculate angle information and compensation for performing a correction procedure.

Abstract: Examples described herein relate to a driver circuit. In an example, the circuit includes a first input for receiving a first signal and a second input for receiving a second signal that is an inverse of the first signal. The circuit also includes a first driver array electrically coupling the first input to a first DC isolator and a first delay tap line electrically coupling the second input to the first DC isolator. The circuit further includes a second driver array electrically coupling the second input to a second DC isolator and a second delay tap line electrically coupling the first input to the second DC isolator. A carrier controller of the circuit is electrically coupled between the first DC isolator and the second DC isolator.

Abstract: In the examples provided herein, a vascular pattern recognition system integrated onto a portable card includes a vascular pattern detection system to obtain image data of blood vessels of a finger to be swiped across a detection area on the portable card, wherein the vascular pattern detection system includes a near infrared light source and an image sensor array. The vascular pattern recognition system also includes an image processor to process the image data to generate a scanned vascular pattern and compare the scanned vascular pattern to a pre-stored pattern stored on the portable card to authenticate the image data, and a security processor to generate a transaction code to authorize a transaction upon authentication of the image data.

Abstract: A cooling device includes a cooling tank, a plurality of circuit board modules received in the cooling tank, and a fill unit received in the cooling tank. The fill unit includes a plurality of first fill modules corresponding to the plurality of circuit board modules. The plurality of first fill modules, the cooling tank and the circuit board modules form a gap, and a plurality of coolant is filled in the gap to dissipate heat for the plurality of circuit board modules.

Abstract: The disclosure heat-dissipation system for a server provides a refrigeration tank configured for containing a refrigerant, a electrical component installed inside of the refrigeration tank submerged by the refrigerant and converts the refrigerant to a vapor, a cooling device installed outside of the refrigeration tank. A heat exchanger is coupled to the cooling device and installed outside of the refrigeration tank, the heat exchanger obtains the vapor from the refrigeration tank; wherein the heat exchanger exchanges the heated fluid formed by the vapor with the cooling device, for cooling the heated fluid, to return to the refrigeration tank.

Abstract: An automatic angle-measured apparatus includes a driving unit coupled with a clamping plate and a driving seat, an encoding unit located at an end of the driving unit facing the driving seat and signally connected to the driving unit, at least one attitude sensor located at the driving seat, and a control unit signally connected to the encoding unit and the attitude sensor. The attitude sensor senses the un-rotated and the rotated driving seat to generate a first and a second signals, respectively. The control unit bases on the first and the second signals to calculate an offset. The control unit controls the driving unit to rotate a predetermined angle. The encoding unit bases on the predetermined angle to generate location information. The control unit bases on the first signal, the second signal and the location information to calculate angle information and compensation for performing a correction procedure.

Abstract: An active-control optical resonator includes an oxide layer; a ring resonator arranged in a loop and positioned on the oxide layer; a tangential optical waveguide optically coupled to the ring resonator; a translatable body configured to selectively move into an evanescent field region of the ring resonator; a first electrode positioned on the translatable body, the first electrode comprising indium tin oxide; and a second electrode positioned between the oxide layer and the ring resonator.

Abstract: An apparatus for electrical discharge machining modulation control includes an EDM module, an open-circuit voltage modulation module, a reference-voltage modulation and judgment module, a database, and a control unit. The control unit selects a reference voltage, and an open-circuit voltage corresponding to characteristics of a workpiece from the database, and generates and transmits a second control signal to the open-circuit voltage modulation module for modulating the open-circuit voltage, and a third control signal to the reference-voltage modulation and judgment module for modulating the reference voltage utilized to determine if the ignition happened. The open-circuit voltage modulation module receives a first control signal periodically transmitted from the control unit for providing the open-circuit voltage to the EDM module.

Abstract: A self-adjusting power device for high efficiency electrical discharge machining and method thereof is disclosed. A high-voltage arc unit and a low-voltage discharge unit provide a high voltage arc pulse and a low voltage discharge pulse to an electrode respectively. The electrode machines a workpiece and feeds back a gap voltage to a discharge pulse generation unit. The discharge pulse generation unit determines whether the gap voltage is lower than a predetermined voltage or not. If yes, a discharge channel between the electrode and the workpiece is conducted, and the discharge pulse generation unit shuts down the high-voltage arc unit and the low-voltage discharge unit is still operating at ON time and shuts down at OFF time. If no, looping the determination of the discharge pulse generation unit. Therefore, discharge machining energy is accurately controlled and high efficient power saving is achieved.

Abstract: A method and a system, for offsetting measurement of machine tool, includes following steps. A tool seat is chosen, a first coordinate is set based on a first datum mark of the tool seat. There is a total tool seat assembling length in between the first datum mark and the tool seat. A tool is chosen, assembled in the tool seat, and includes a total tool length. A second coordinate is set based on a second datum mark of a measuring unit. The tool seat is moved to make a machining end of the tool contact with the second coordinate to obtain a relative total length in between the first and the second coordinate. The total tool length subtracts from the relative total length equals an assembled offset length. The total tool seat assembling length subtracts from the relative total length equals and obtains a tool assembling length.

Abstract: A container data center includes a container having a raised floor defining a number of vents, a server system including a cabinet supported on the raised floor adjacent to the vents, a cooling device, an adjusting plate movably installed to the cabinet for covering or uncovering the vents, a driving member, a temperature sensor mounted to the cabinet, and a micro control unit (MCU) electrically connected to the driving member and the temperature sensor. The cooling device releases cooling air into the container under the raised floor. The temperature sensor senses the temperature in the cabinet. The MCU receives the sensed temperature and compares the sensed temperature with a preset temperature, to direct the driving member to drive the adjusting plate to move relative to the vents.

Abstract: A method for selecting fans for a server cabinet includes the following steps. First, a type of fan stored in a database is selected, and the parameters related to the fan of the selected type are compared to input parameters of a server cabinet. Second, a maximum quantity of the fan of the selected type that can be accommodated in the server cabinet is calculated. Third, an airflow of an initial quantity of the fan of the selected type is calculated when the initial quantity of the fan of the selected type is determined to be less than the maximum quantity. Fourth, the initial quantity of the fan of the selected type and the related parameters of the fan of the selected type are output to a display if the calculated airflow is determined to be greater than or equal to a minimum required airflow of the server cabinet.

Abstract: A fan selection method is provided. The method determines an optimal amount of each type of fan to be used in a cabinet. The optimal amount of each type of fan is determined by an intersection between a fan performance curve and an airflow resistance curve of the cabinet. The model number and optimal amount of each type of fan is output to a user.

Abstract: A cooling system includes a first group of fans, a second group of fans, and an air conducting cover. The air conducting cover includes a first partition, a second partition, a third partition. The first partition is connected between the second partition and the third partition to define a first space, a second space and a third space. Wherein the first group of fans directs air flow to enter the first space and the second space, the second group of fans directs air flow to enter the third space.