Systems and methods for activation in an optical circuit in accordance with embodiments of the invention are illustrated. One embodiment includes an optical activation circuit, wherein the circuit comprises a directional coupler, an optical-to-electrical conversion circuit, a time delay element, a nonlinear signal conditioner, and a phase shifter. The directional coupler receives an optical input and provides a first portion to the optical-to-electrical conversion circuit and a second portion to the time delay element, the time delay element provides a delayed signal to the phase shifter, and the optical-to-electrical conversion circuit converts an optical signal from the directional coupler to an electrical signal used to activate the phase shifter to shift the phase of the delayed signal.

According to the present invention, an optical latch circuit includes a voltage detector configured to compare a first power generation voltage input from a first input terminal with a preset first threshold voltage and output a set signal from a determination output terminal when the first power generation voltage exceeds the first threshold voltage, a first photovoltaic element connected between the first input terminal and a grounding point in a forward direction and configured to output a first power generation voltage to the first input terminal according to photovoltaic power when light is radiated, and a feedback resistor inserted between the first input terminal and the determination output terminal.

According to the present invention, an optical latch circuit includes a voltage detector configured to compare a first power generation voltage input from a first input terminal with a preset first threshold voltage and output a set signal from a determination output terminal when the first power generation voltage exceeds the first threshold voltage, a first photovoltaic element connected between the first input terminal and a grounding point in a forward direction and configured to output a first power generation voltage to the first input terminal according to photovoltaic power when light is radiated, and a feedback resistor inserted between the first input terminal and the determination output terminal.

A clock generation circuit includes a mode-locked laser that generates an optical pulse, a photodiode that photoelectrically converts the optical pulse generated by the mode-locked laser, and a filter that attenuates at least one of a DC component and a harmonic component of the mode-locked laser included in an electric signal output from the photodiode.

An optical transmitter includes a superconducting driver circuit including at least one Josephson junction, the superconducting driver circuit having a voltage output and having a connection to a circuit ground, a first bias circuit coupled to the voltage output of the superconducting driver circuit, a second bias circuit, wherein the second bias circuit establishes a positive bias voltage relative to the circuit ground, and an electro-optic device having a first end and a second end, wherein the first end of the electro-optic device is coupled to the voltage output of the superconducting driver circuit, and wherein the second end of the electro-optic device is coupled to the second bias circuit.

An optical transmitter includes a superconducting driver circuit including at least one Josephson junction, the superconducting driver circuit having a voltage output and having a connection to a circuit ground, a first bias circuit coupled to the voltage output of the superconducting driver circuit, a second bias circuit, wherein the second bias circuit establishes a positive bias voltage relative to the circuit ground, and an electro-optic device having a first end and a second end, wherein the first end of the electro-optic device is coupled to the voltage output of the superconducting driver circuit, and wherein the second end of the electro-optic device is coupled to the second bias circuit.

A system, method and apparatus for providing pulsed power comprises a trigger comprising a pulse generator and a photonic transmitter and a multi-stage switch comprising a gate driver circuit, the gate driver circuit further comprising a plurality of transistors connected in series and a plurality of driver stages wherein each of the transistors is turned on and off simultaneously by the plurality of driver stages.

Disclosed is a semiconductor device and a clock system including a pulse laser-based clock distribution network. The semiconductor device includes a current pulse generator that generates a current pulse train based on a first optical pulse train and a second optical pulse train, a clock distribution network that outputs a clock based on the current pulse train, a CDN detector that detects at least one of status information of the clock distribution network and the output clock to generate detection information, and control logic that generates a control signal for regulating a current of the current pulse train based on the detection information.

Disclosed is a semiconductor device and a clock system including a pulse laser-based clock distribution network. The semiconductor device includes a current pulse generator that generates a current pulse train based on a first optical pulse train and a second optical pulse train, a clock distribution network that outputs a clock based on the current pulse train, a CDN detector that detects at least one of status information of the clock distribution network and the output clock to generate detection information, and control logic that generates a control signal for regulating a current of the current pulse train based on the detection information.

A low-jitter digital clock signal generating system which uses optical pulses output from a pulse laser includes a first balanced photodetector that converts first and second optical pulses with a delayed time interval into first and second electrical pulses through first and second photodiodes and outputs first and second modulated pulses generated by allowing the first and second electrical pulses to partially overlap each other, a second balanced photodetector that converts third and fourth optical pulses with the delayed time interval into third and fourth electrical pulses through third and fourth photodiodes, and outputs a second modulated pulse generated by allowing the third and fourth electrical pulses to partially overlap each other, and a capacitor. The capacitor is charged by the first modulated pulse, is discharged by the second modulated pulse, and outputs a voltage according to the charging and discharging as a clock signal.