Fig. 1. Comparison of light intensity of each sideband under electro-optic modulation.(a) Intensity modulation; (b) phase modulation

Fig. 2. Influences of laser linewidth and phase-locked loop bandwidth on phase-locked error

Fig. 3. System scheme diagram

Fig. 4. Diagram of fiber grating temperature feedback control system

Fig. 5. Grating transmission spectrum

Fig. 6. Test results of fiber Bragg grating bandwidth. (a) Oscilloscope graphic; (b) wavelength meter graphic

Fig. 7. Measured laser spectra. (a) Laser spectrum after electro-optic modulation; (b) laser spectrum after fiber grating

Fig. 8. Diagram of grating temperature feedback control

Fig. 9. Measured intensity noise curves. (a) Intensity noise of RIO laser; (b) intensity noise of system

Fig. 10. Measure tuning bandwidth curves. (a) Amplitude-frequency response curve; (b) phase-frequency response curve

Fig. 11. Linewidth of laser source