1：Experimental Design and Method Selection:

The study uses a resonant fiber optic gyroscope system based on laser combination tuning and locking technology. A narrow linewidth semiconductor laser with a center wavelength of 1550 nm is used. The light is divided and modulated before injecting into the fiber ring resonator (FRR) in clockwise (CW) and counterclockwise (CCW) directions. The system employs digital lock-in amplifiers for demodulation to obtain rotation rate and error signals for feedback loops.

2：Sample Selection and Data Sources:

The FRR used as a sensitive element has specific parameters (radius: 6 cm, length: 3 m, FSR: 68 MHz, Q: 2×10^7). The laser's output frequency and light power are monitored in real time.

3：7). The laser's output frequency and light power are monitored in real time. List of Experimental Equipment and Materials:

3. List of Experimental Equipment and Materials: Includes a semiconductor laser, photodetectors, Y-branch phase modulator, signal generators, and digital lock-in amplifiers.

4：Experimental Procedures and Operational Workflow:

The laser's frequency is tuned by voltage and temperature to extend its output frequency range. The system's performance is tested under different conditions to observe the effects of temperature and light power fluctuation.

5：Data Analysis Methods:

The relationship between light power and the center point of demodulation curve is analyzed to compensate for the effects of light power fluctuation.