Integrated source generation, transmission, and distribution system based on photonic loop

An integrated source generation, transmission, and distribution system based on a photonic loop;

• comprising:
• a central station unit and subscriber station units,
• wherein the central station unit comprises a first connection port and a second connection port;
• and the subscriber station units are connected in series by optical fibers to form a single-fiber bidirectional optical transmission path;
• a first end of the single-fiber bidirectional optical transmission path is connected to the first connection port of the central station unit, and a second end of the single-fiber bidirectional optical transmission path is connected to the second connection port of the central station unit, so as to form the photonic loop;
• the photonic loop is a single-fiber bidirectional photonic loop;
• wherein the central station unit is configured to transmit a first optical carrier radio frequency signal into the photonic loop in a clockwise direction of the photonic loop and transmit a second optical carrier radio frequency signal into the photonic loop in a counterclockwise direction of the photonic loop;
• the central station unit is configured to receive the first optical carrier radio frequency signal transmitted in the clockwise direction and the second optical carrier radio frequency signal transmitted in the counterclockwise direction to form a closed loop after an optical processing and an electrical processing;
• a microwave signal is generated based on closed-loop oscillation of the photonic loop;
• the central station unit is configured to extract time delay information and phase information of the photonic loop from the microwave signal in combination with an external reference signal, is configured to stabilize transmission delays of the photonic loop, and is configured to lock a frequency or a phase of the microwave signal;
• the subscriber station units are configured to receive and process the first optical carrier radio frequency signal transmitted in the clockwise direction and the second optical carrier radio frequency signal transmitted in the counterclockwise direction to obtain first microwave frequency signals through the optical processing and the electrical processing;
• each of the first microwave frequency signals has a stable frequency, phases of the first microwave frequency signals are synchronized.