A single line converter module comprises a housing; an environmentally hardened fiber optic connector located in the housing and configured to be optically coupled to a service terminal for receiving downstream optical frames; a single electrical connector located in the housing and coupled over a metallic medium to a network terminal providing a service to respective customer premise equipment (CPE); and an optical-to-electrical (O/E) converter located in the housing and configured to convert the downstream optical frames to an electrical signal for transmission over the metallic medium to the network terminal.

Disclosed examples include lateral photovoltaic sensors and systems with one or more semiconductor structures individually including a lateral sensor face to receive photons of a given wavelength, and an extended lateral junction region having an effective junction distance greater than 5 times an absorption depth for the semiconductor structure that corresponds to the given wavelength, to facilitate high current transfer ratios for use in low-noise, high-efficiency power supply applications as well as optically isolated data transfer or photon detector applications.

An isolation system and isolation device are disclosed. An illustrative isolation device is disclosed to include first circuitry having at least a first emitter and a first detector, second circuitry having at least a dual-purpose component, an isolation material configured to electrically isolate the first circuitry from the second circuitry, and switching circuitry adapted to connect the dual-purpose component to emit a first signal for detection by the first detector in a first configuration, and to receive a second signal from the first emitter in a second configuration.

An opto-coupler includes a housing having end walls configured to have high-voltage (HV) input and output conductors protruding therethrough. The opto-coupler also includes at least one light emitting diode (LED) mounted to the housing and configured to activate the HV diode to pass electrical current by emitting light toward the HV diode. At least one press-fit end cap is configured to provide a press-fit seal either between the HV input conductor and the input end wall or between the HV output conductor and the output end wall. The press-fit end cap is configured to protect the LED from damage by shaping an electric field between the HV input or output conductor and the LED. Embodiments enable compact opto-coupler sizes with high-voltage ratings, such as 8 kV or 15 kV. Electrical current transfer ratios may be much higher than in existing opto-couplers.

An apparatus is disclosed that implements an optical transceiver for radio frequency (RF) communication. In an example aspect, the apparatus includes an antenna array, a fiber optic cable, and a radio frequency integrated circuit (RFIC) that is coupled to the antenna array and configured to receive an RF signal from the antenna array. The RFIC includes a light-emitting device disposed on a surface of the light emitting device. The light-emitting device is configured to emit an optical signal that is modulated responsive to the RF signal and to direct the modulated optical signal to the fiber optic cable so as to cause the modulated optical signal to propagate along the fiber optic cable.

A data translation system (100) for performing a non-linear data translation on a digitized AC signal is provided. The non-linear data translation system (100) includes an input for receiving the digitized AC signal, an output for outputting a non-linearly translated signal, and a processing system (104) coupled to the input and to the output. The processing system (104) is configured to receive the digitized AC signal, non-linearly translate the digitized AC signal using a predetermined transfer function to create the non-linearly translated signal, and transfer the non-linearly translated signal to the output.

A method and apparatus for isolating an RF signal are provided. A first RF signal is received and passed to an input of a 90 degree hybrid. An output of the 90 degree hybrid is connected to a first waveguide and a second output is connected to a second waveguide of an optical modulator. A second RF signal is received and passed to an input of a second 90 degree hybrid. An output of the second 90 degree hybrid is connected to the second waveguide and a second output is connected to the first waveguide of the optical modulator. The optical modulator is biased to produce single side band optical outputs of the RF signals. The single side band optical outputs are passed to an optical notch filter to remove one of the side band outputs. The other of the side band optical outputs is converted to an electrical signal.

A system and method are disclosed for providing electrically isolated communications between two USB2 devices. Two isolating eUSB2 repeaters are utilized to implement a digital isolation barrier between the two USB2 devices. The isolating eUSB2 repeaters are configured to broker isolated communications between the two USB2 devices using a modified eUSB2 protocol that allows the two isolating eUSB2 repeaters to interoperate across the isolating barrier. The modified eUSB2 protocol allows the two isolating eUSB2 repeaters to broker isolating communications on behalf of the USB2 devices without the use of an accurate clock signal. The modified eUSB2 protocol utilized by the isolating eUSB2 repeaters is configured in particular to support certain end-of-packet translations between USB2 data and the modified eUSB2 protocol, management of certain USB2 bus state transitions and assignment of roles to the two isolating eUSB2 repeaters.

A quasi-optical coupling system launches and extracts surface wave communication transmissions from a wire. At millimeter-wave frequencies, where the wavelength is small compared to the macroscopic size of the equipment, the millimeter-wave transmissions can be transported from one place to another and diverted via lenses and reflectors, much like visible light. Transmitters and receivers can be positioned near telephone and power lines and reflectors placed on or near the cables can reflect transmissions onto or off of the cables. The lenses on the transmitters are focused, and the reflectors positioned such that the reflected transmissions are guided waves on the surface of the cables. The reflectors can be polarization sensitive, where one or more of a set of guided wave modes can be reflected off the wire based on the polarization of the guided wave modes and polarization and orientation of the reflector.

Methods and systems for selectable parallel optical fiber and WDM operation may include an optoelectronic transceiver integrated in a silicon photonics die. The optoelectronic transceiver may, in a first communication mode, communicate continuous wave (CW) optical signals from an optical source module to a first subset of optical couplers on the die for processing signals in optical modulators in accordance with a first communications protocol, and in a second communication mode, communicate the CW optical signals to a second subset of optical couplers for processing signals in the optical modulators in accordance with a second communications protocol. Processed signals may be transmitted out of the die utilizing a third subset of the optical couplers. First or second protocol optical signals may be received from the fiber interface coupled to a fourth subset or a fifth subset, respectively, of the optical couplers.