Abstract: Two or more monolithic or heterogeneously integrated substrates are attached to each other and optically edge-coupled using spot-size converters. Spot-size converters are placed between planar optical waveguides and cleaved or etched facets in each substrate. The facets are provide optical edge coupling and the spot-size converters are used to adjust at least the size, shape, and divergence of the optical beams entering or exiting the optical waveguides as to improve the optical coupling between the substrates. In addition to spot-size converters, filtering and other light adjusting elements may be placed between the substrates. Integrated lasers, semiconductor optical amplifiers, and photonic integrated circuits can be provided with complementary metal-oxide semiconductor (CMOS)-compatible silicon (Si) photonic substrates, which can also contain integrated electronics.

Abstract: Methods for realizing integrated lasers and photonic integrated circuits on complimentary metal-oxide semiconductor (CMOS)-compatible silicon (Si) photonic chips, potentially containing integrated electronics, are disclosed. The integration techniques rely on light coupling with integrated light coupling elements such as turning mirrors, lenses, and surface grating couplers. Light is coupled from between two or more substrates using the light coupling elements. The technique can realize integrated lasers on Si where a gain flip chip (the second substrate) is bonded to a Si chip (the first substrate) and light is coupled between a waveguide in the gain flip chip to a Si waveguide by way of a turning mirror or grating coupler in the flip chip and a grating coupler in the Si chip. Integrated lenses and other elements such as spot-size converters can also be incorporated to alter the mode from the gain flip chip to enhance the coupling efficiency to the Si chip.

Abstract: A power management integrated circuit comprises a plurality of power source circuits power received at a power supply input terminal to supply power to a plurality of power supply output terminals. A plurality of power source circuits is coupled between the power supply input terminal and the respective power supply output terminals. The power management integrated circuit comprises an active configuration memory and a communication interface with at least one terminal for uploading configuration data from outside the power management integrated circuit into the configuration memory. A control circuit controls operating parameters of respective ones of the power source circuits dependent on the configuration data from the active configuration memory. Thus, the power management integrated circuit is able to switch between different power supply states in a dynamically configurable way, without requiring external control over the configuration during switching.

Abstract: A power management integrated circuit comprises a plurality of power source circuits power received at a power supply input terminal to supply power to a plurality of power supply output terminals. A plurality of power source circuits is coupled between the power supply input terminal and the respective power supply output terminals. The power management integrated circuit comprises an active configuration memory and a communication interface with at least one terminal for uploading configuration data from outside the power management integrated circuit into the configuration memory. A control circuit controls operating parameters of respective ones of the power source circuits dependent on the configuration data from the active configuration memory. Thus, the power management integrated circuit is able to switch between different power supply states in a dynamically configurable way, without requiring external control over the configuration during switching.

Abstract: A power management integrated circuit comprises a plurality of power source circuits power received at a power supply input terminal to supply power to a plurality of power supply output terminals. A plurality of power source circuits is coupled between the power supply input terminal and the respective power supply output terminals. The power management integrated circuit comprises an active configuration memory and a communication interface with at least one terminal for uploading configuration data from outside the power management integrated circuit into the configuration memory. A control circuit controls operating parameters of respective ones of the power source circuits dependent on the configuration data from the active configuration memory. Thus, the power management integrated circuit is able to switch between different power supply states in a dynamically configurable way, without requiring external control over the configuration during switching.

Abstract: Method and arrangement for cyclically AD converting an analog signal with a sampler capacitance and an integrator capacitance, comprising the steps of generating a difference signal multiplied by the ratio of said capacitances from the analog signal and a reference signal, deriving a digital bit from said difference signal, doubling the difference signal multiplied by said ratio, shifting said doubled signal by the reference signal multiplied by said ratio and using the shifted signal as difference signal multiplied by said ratio for the next cycle.

Abstract: A power management integrated circuit comprises a plurality of power source circuits power received at a power supply input terminal to supply power to a plurality of power supply output terminals. A plurality of power source circuits is coupled between the power supply input terminal and the respective power supply output terminals. The power management integrated circuit comprises an active configuration memory and a communication interface with at least one terminal for uploading configuration data from outside the power management integrated circuit into the configuration memory. A control circuit controls operating parameters of respective ones of the power source circuits dependent on the configuration data from the active configuration memory. Thus, the power management integrated circuit is able to switch between different power supply states in a dynamically configurable way, without requiring external control over the configuration during switching.

Abstract: Method and arrangement for cyclically AD converting an analog signal with a sampler capacitance and an integrator capacitance, comprising the steps of generating a difference signal multiplied by the ratio of said capacitances from the analog signal and a reference signal, deriving a digital bit from said difference signal, doubling the difference signal multiplied by said ratio, shifting said doubled signal by the reference signal multiplied by said ratio and using the shifted signal as difference signal multiplied by said ratio for the next cycle.