An optical device may include an optical subassembly and a digital signal processor (DSP). The optical device may include a radio frequency (RF) interconnect that electrically connects the optical subassembly and the DSP. The optical device may include a passive RF filter on one or more transmission lines of the RF interconnect.

An automatic power on apparatus, system, method, and circuit automatically control the on/off state of a first electronic device or a second electronic device. When the second electronic device is positioned on, in, or proximate to the mounting area of the first electronic device, the automatic power on circuit establishes a coupling signal between a first portion of the automatic power on circuit and a second portion of the automatic power on circuit, activates the automatic power on circuit based on the coupling signal, and automatically controls an on/off state of the first electronic device or the second electronic device based on the activation of the automatic power on circuit.

An optical device may include an optical subassembly and a digital signal processor (DSP). The optical device may include a radio frequency (RF) interconnect that electrically connects the optical subassembly and the DSP. The optical device may include a passive RF filter on one or more transmission lines of the RF interconnect.

In response to a measured value of temperature of a stator by a thermometer exceeding a first temperature threshold, an overheat signal may be output to a rotor of a rotary connector via a communication device. In response to the measured value of the temperature exceeding a second temperature threshold higher than the first temperature threshold, power supply to a transmission coil that transmits power to a receiving coil of the rotor in a non-contact manner is stopped. In response to the overheat signal being received or a measured value of temperature of the rotor by a thermometer exceeding a third temperature threshold, a limit signal for limiting current flowing through a load circuit is output. In response to the measured value of the temperature by the thermometer exceeding a fourth temperature threshold higher than the third temperature threshold, output of power received from the stator is stopped.

An exemplary medical system includes a first electrical circuit (204-1) on a PCB (206), a second electrical circuit (204-2) on the PCB and electrically isolated from the first electrical circuit, and a free space optics interface assembly (302) on the PCB. The free space optics assembly includes a housing (402) defining a free space chamber (404) in the housing, an optical transmitter (416) having an input (426) that is electrically coupled to the first electrical circuit, and an optical receiver (418) in optical communication with the optical transmitter via the free space chamber and having an output (432) that is electrically coupled to the second electrical circuit. The optical transmitter and the optical receiver are hermetically sealed within the housing.

An integrated circuit (IC) package comprising an optical die comprising a configurable optical switch. The configurable optical switch comprises an optical switch operably coupled to one or more optical transceivers. An optical connector comprises at least one exo-package optical port. The at least one exo-package optical port is operably coupled to the configurable optical switch. The configurable optical switch is to pass an optical signal on the at least one of the one or more exo-package ports to at least one of the one or more optical transceivers, and an IC die comprising electronic circuitry is operably coupled to the one or more optical transceivers.

An optical transmission/reception unit includes a carrier rotatable around an axis of rotation, an optical receiver arranged at the carrier on the axis of rotation so as to receive an optical reception signal from a first direction, an optical transmitter arranged at the carrier adjacent to the optical receiver so as to emit an optical transmission signal in a second direction, and a transmission/reception optic arranged at the carrier on the axis of rotation above the optical receiver, wherein the transmission/reception optic includes a reception optic and a transmission optic arranged in the reception optic, wherein the reception optic is configured to guide the optical reception signal striking the transmission/reception optic towards the optical receiver on the axis of rotation, and wherein the transmission optic is configured to displace onto the axis of rotation the optical transmission signal emitted by the optical transmitter.

Embodiments are directed to a rotor system for an aircraft comprising a gearbox configured to receive torque from a drive train, a mast having a first end and a second end, wherein the first end is attached to the gearbox and the mast configured to rotate in response to the torque from the drive train, a rotor hub attached to the second end of the mast, a first light transceiver mounted adjacent to the first end of the mast, wherein the first light transceiver is does not rotate relative to the mast, and a second light transceiver mounted adjacent to the second end of the mast, wherein the second light transceiver rotates with the mast.

An apparatus comprising a chip comprising a plurality of micro-emitters, the micro-emitters to couple to a plurality of data lines and to an optical fiber, wherein the micro-emitters are to generate optical signals for parallel transmission through the optical fiber, the optical signals corresponding to data communicated on the data lines.

An assembly including an avionics cabinet and a module. The module being insertable into a recess of the avionics cabinet along a longitudinal axis and securely held there in a reversible manner in an operative position. The module having a first face opposite a first wall of the avionics cabinet. The first wall includes a first optical array having first optical emitters and first optical receivers. The first face of the module includes a second optical array having second optical emitters and second optical receivers. When the module is in the operative position, the first and second optical arrays are spaced apart from each other by a predefined distance. Each second optical emitter is arranged opposite a first optical receiver and each second optical receiver is arranged opposite a first optical emitter.