Abstract: Disclosed are a packaging structure and a manufacturing method thereof, and a photonic integrated circuit chip (800). The manufacturing method of the packaging structure includes: providing a photonic integrated structure (100) including first openings (111) and a conductive material disposed in each first opening (111); providing a first substrate (201) including second openings (202) and a conductive material (204a) disposed in each second opening (202); and bonding the photonic integrated structure (100) and the first substrate (201) such that each first opening (111) is aligned with a corresponding second opening (202) and the conductive material in the first opening (111) is electrically connected with the conductive material (204a) in the corresponding second opening (202).

Abstract: A waveguide structure and a manufacturing method thereof, and a photonic integrated circuit and a manufacturing method thereof are disclosed. The waveguide structure and the manufacturing method thereof include: forming a first material layer; forming a first waveguide and a second waveguide based on the first material layer, wherein the first waveguide and the second waveguide are spaced apart from each other; forming a second material layer; and forming a waveguide coupling structure based on the second material layer, wherein the waveguide coupling structure is optically coupled to the first waveguide and the second waveguide respectively, to optically connect the first waveguide and the second waveguide.

Abstract: The present invention relates to a Vertical-Cavity Surface-Emitting Laser (VCSEL) die comprising a VCSEL array configured for flip chip bonding to a substrate with the VCSEL array being designed for emission from a substrate side of the chip, integrated beam shaping optics and electrical contacts including a top surface contact and an etched metal connection through a top mirror structure to a bottom n-mirror, or to an n-doped buffer layer under the bottom n-mirror or to the substrate. The invention further relates to an assembly comprising the above VCSEL die and a photodetector in which the VCSEL die is attached to a circuit board or sub-mount with a solder or bump bonds on the VCSEL die and the photodetector is placed on a same circuit board or sub-mount right next to the VCSEL die.

Abstract: Systems and methods disclosed herein include an illumination module for 3D sensing applications. The illumination module may include an array of vertical cavity surface emitting lasers (VCSELs) emitting light, a driver configured to provide current to the array of VCSELs, and an optical element configured to receive the light emitted by the array of VCSELs and output a light pattern from the illumination module.

Abstract: The present disclosure is directed to systems and methods useful for providing a low profile metalens array that provides a relatively uniform far-field illumination in the visible and/or near-infrared electromagnetic spectrum using a plurality of vertical cavity surface emitting lasers (VCSELs) disposed a distance from a plurality of metalenses forming a metalens array, in which the VCSELs are decorrelated from the metalenses forming the metalens array.

Abstract: Systems and methods disclosed herein include an illumination module for 3D sensing applications. The illumination module may include an array of vertical cavity surface emitting lasers (VCSELs) emitting light, a driver configured to provide current to the array of VCSELs, and an optical element configured to receive the light emitted by the array of VCSELs and output a light pattern from the illumination module.

Abstract: An asset tracking system that utilizes a wireless network system and has primary (main) and secondary (sub) tracking devices or ‘tags’ that are assigned to assets. The main tracking device acts as a coordinator and the sub tracking devices surrounding the coordinator act as end-devices. Each main device acts as a gateway network to long range communication while each sub device can only communicate in proximity profile (short range or nearby communication). Each sub device can communicate only with a main device. The main device passes data from the sub device to a remote host transparently. Each sub device sends its data when it triggered by a ‘ping’ from the main device.

Abstract: An asset tracking system that utilizes a wireless network system and which includes primary (active) and secondary (passive) tracking devices. The primary tracking device acts as a coordinator and the secondary devices surrounding the coordinator act as end-devices. Each secondary device can communicate only with the primary device. The primary device passes messages (data) from the secondary devices to the remote host transparently. Each secondary device only sends its data when it triggered by a ‘ping’ from the primary device. When a ping event occurs, the primary device broadcasts a main data packet, in some embodiments followed by two additional data packets. Within this time span of the primary data packet, the secondary devices send their data packets to the primary device, in some embodiments, as two small data packets.

Abstract: An RF asset tracking device for cargo containers that has an extended operational life, due to a power management system and multiple power sources. The device has a solar cell and high capacity supercapacitor as a principal power source and a rechargeable battery as an auxiliary power source. Control circuitries manage and regulate the usage of the primary and secondary sources. Together, these power sources provide sufficient power for the tracking device to operate for an extended period of time, thus increasing the period between needed maintenance and decreasing downtime and thus cost.

Abstract: An RF asset-tracking device that has an extended operational life, thus increasing the duration between battery replacement or maintenance. The asset-tracking device is provided with an electro-mechanical energy-harvesting device to supplement the battery. The energy-harvesting device provides additional power to augment the battery on a temporary basis, when the battery level is low, until the battery can be replaced. In one particular embodiment, the tracking device has a power management system, a battery power source and a battery monitor, and an electro-mechanical energy-harvesting device and a high capacity supercapacitor operably connected to the power management system.

Abstract: A wafer is formed having a plurality of laser-to-slider submount features on a first surface. An etching process is used to form scribe lines between the submounts on the first surface of the wafer. The wafer is separated at the scribe lines to form the submounts.

Abstract: An asset tracking system that utilizes a wireless network system and has primary (main) and secondary (sub) tracking devices or ‘tags’ that are assigned to assets. The main tracking device acts as a coordinator and the sub tracking devices surrounding the coordinator act as end-devices. Each main device acts as a gateway network to long range communication while each sub device can only communicate in proximity profile (short range or nearby communication). Each sub device can communicate only with a main device. The main device passes data from the sub device to a remote host transparently. Each sub device sends its data when it triggered by a ‘ping’ from the main device.

Abstract: An integrated solid state dosimeter comprising a silicon PiN photodiode, and a scintillator material directly on and optically coupled with the photodiode. The scintillator material can be deposited on the photodiode at a temperature less than 350 degrees C. Multiple dosimeters can be combined, either as a 2D or 3D array. The dosimeter(s) can be incorporated into a wireless dosimeter device.

Abstract: Apparatus and method for managing data in a memory, such as but not limited to a flash memory array. In some embodiments, an apparatus includes an array of memory cells and a dual polarity charge pump. The dual polarity charge pump has a positive polarity voltage source which applies a positive voltage to a charge storage device to program a selected memory cell to a first programming state, and a negative polarity voltage source which applies a negative voltage to the charge storage device to program the selected memory cell to a different, second programming state.

Abstract: A wafer is formed having a plurality of laser-to-slider submount features on a first surface. An etching process is used to form scribe lines between the submounts on the first surface of the wafer. The wafer is separated at the scribe lines to form the submounts.

Abstract: A wafer is formed having a plurality of laser-to-slider submount features on a first surface. An etching process is used to form scribe lines between the submounts on the first surface of the wafer. The wafer is separated at the scribe lines to form the submounts.

Abstract: An asset tracking system that utilizes a wireless network system and which includes primary (active) and secondary (passive) tracking devices. The primary tracking device acts as a coordinator and the secondary devices surrounding the coordinator act as end-devices. Each secondary device can communicate only with the primary device. The primary device passes messages (data) from the secondary devices to the remote host transparently. Each secondary device only sends its data when it triggered by a ‘ping’ from the primary device. When a ping event occurs, the primary device broadcasts a main data packet, in some embodiments followed by two additional data packets. Within this time span of the primary data packet, the secondary devices send their data packets to the primary device, in some embodiments, as two small data packets.

Abstract: An RF asset-tracking device that has an extended operational life, thus increasing the duration between battery replacement or maintenance. The asset-tracking device is provided with an electro-mechanical energy-harvesting device to supplement the battery. The energy-harvesting device provides additional power to augment the battery on a temporary basis, when the battery level is low, until the battery can be replaced. In one particular embodiment, the tracking device has a power management system, a battery power source and a battery monitor, and an electro-mechanical energy-harvesting device and a high capacity supercapacitor operably connected to the power management system.

Abstract: A radiation exposure monitoring system comprising wireless dosimeter devices that are very energy efficient and that can communicate remotely with a remote host that in turn performs the dose calculations from the raw data transmitted by the wireless dosimeter devices. The system has a plurality of wireless dosimeter devices not equipped with a display screen, each comprising a integrated dosimeter, a control unit being in turn connected to a wireless transceiver for the transmission of data representative of the radiation detected by each dosimeter; at least one remote host comprising a wireless transceiver suitable for communicating with at least some of the transceivers of the dosimeter devices and with at least one remote host for tracking the wireless dosimeter.

Abstract: Method and apparatus for managing data in a memory, such as a flash memory array. In accordance with some embodiments, a memory cell is provided with a plurality of available programming states to accommodate multi-level cell (MLC) programming. A control circuit stores a single bit logical value to the memory cell using single level cell (SLC) programming to provide a first read margin between first and second available programming states. The control circuit subsequently stores a single bit logical value to the memory cell using virtual multi-level cell (VMLC) programming to provide a larger, second read margin between the first available programming state and a third available programming state.