Abstract: A photodetector with an integrated reflective grating structure includes a substrate, an active layer disposed on the substrate, and a grating structure disposed between the substrate and the active layer. A first doped region is formed on the substrate at a location near the grating structure. A second doped region is formed on a surface of the active layer away from the grating structure. The doping type of the second doped region is different from that of the first doped region.

Abstract: A photodetector with an integrated reflective grating structure includes a substrate, an active layer disposed on the substrate, and a grating structure disposed between the substrate and the active layer. A first doped region is formed on the substrate at a location near the grating structure. A second doped region is formed on a surface of the active layer away from the grating structure. The doping type of the second doped region is different from that of the first doped region.

Abstract: An optical modulator includes: a bottom substrate layer, having a first surface; a traveling-wave electrode, being disposed on the first surface of the bottom substrate layer and including a plurality of ground electrodes and a plurality of signal electrodes between the ground electrode; an optical waveguide disposed inside the bottom substrate layer; and a shield layer, including a substrate and a metal layer, the substrate covering at least a portion of the traveling-wave electrode and the metal layer being disposed on the surface of the substrate facing away from the traveling-wave electrode. Each of the ground electrodes is electrically connected to the metal layer to provide electromagnetic shielding for the signal electrodes between the ground electrodes.

Abstract: The present invention relates to an FPGA-based method and system for network function accelerating. The method comprises: building a network function accelerating system that includes a physical machine and an accelerator card connected through a PCIe channel, wherein the physical machine includes a processor and the accelerator card includes an FPGA, in which the accelerator card serves to provide network function accelerating for the processor; the processor being configured to: when it requires the accelerator card to provide network function accelerating, check whether there is any required accelerator module present in the FPGA, and if yes, acquire an accelerating function ID corresponding to the required accelerator module, and if not, select at least one partial reconfigurable region in the FPGA and configure it into the required accelerator module and generate a corresponding accelerating function ID; and/or sending an accelerating request to the FPGA.

Abstract: An optical modulator includes: a bottom substrate layer, having a first surface; a traveling-wave electrode, being disposed on the first surface of the bottom substrate layer and including a plurality of ground electrodes and a plurality of signal electrodes between the ground electrode; an optical waveguide disposed inside the bottom substrate layer; and a shield layer, including a substrate and a metal layer, the substrate covering at least a portion of the traveling-wave electrode and the metal layer being disposed on the surface of the substrate facing away from the traveling-wave electrode. Each of the ground electrodes is electrically connected to the metal layer to provide electromagnetic shielding for the signal electrodes between the ground electrodes.

Abstract: The present invention relates to an FPGA-based method and system for network function accelerating. The method comprises: building a network function accelerating system that includes a physical machine and an accelerator card connected through a PCIe channel, wherein the physical machine includes a processor and the accelerator card includes an FPGA, in which the accelerator card serves to provide network function accelerating for the processor; the processor being configured to: when it requires the accelerator card to provide network function accelerating, check whether there is any required accelerator module present in the FPGA, and if yes, acquire an accelerating function ID corresponding to the required accelerator module, and if not, select at least one partial reconfigurable region in the FPGA and configure it into the required accelerator module and generate a corresponding accelerating function ID; and/or sending an accelerating request to the FPGA.