Optical phased array, method for preparing optical phased array and phase-shifting control system

A phase-shifting control circuit, comprising:

• a power output unit, comprising a plurality of output terminals, wherein each of the plurality of output terminals is used to output an output voltage;
• an output channel, wherein an input terminal of the output channel is coupled to one of the plurality of output terminals through a single pole double throw switch;
• and
• a phase shifting unit array, comprising a plurality of phase shifting units;
• wherein an output terminal of the output channel is coupled to one of the plurality of phase shifting units through a single pole multiple throw switch;
• wherein the single pole double throw switch is provided with a plurality of phase-shifting input terminals and one phase-shifting output terminal;
• wherein the plurality of output terminals of the power output unit are coupled to the input terminal of the output channel through the single pole doble throw switch;
• wherein the plurality of phase shifting units comprises a first phase shifting unit, and a second phase shifting unit, and the plurality of output terminals of the power output unit comprises a first output terminal and a second output terminal:
• wherein during operation, the output terminal of the output channel is sequentially coupled to each phase shifting unit in a predetermined order, and when the first output terminal of the power output unit outputs a first phase shifting voltage to the first phase shifting unit that is currently coupled to the output terminal of the output channel, an output voltage of the second output terminal of the power output unit is modulated to be a second phase shifting voltage required by the second phase shifting unit;
• wherein, after a preset time period, the second output terminal of the power output unit is coupled to the input terminal of the output channel to output the second phase shifting voltage required by the second phase shifting unit to the second phase shifting units
• wherein each phase shifting unit comprises a capacitor, wherein in response to the first output terminal of the power output unit outputting the first phase shifting voltage required by the first phase shifting unit to the capacitor of the first phase shifting unit, the second output terminal of the power output unit is coupled to the input terminal of the output channel to output the second phase shifting voltage required by the second phase shifting unit.