Fig. 1. MG-Y laser

Fig. 2. Tuning principle of MG-Y laser

Fig. 3. I_LR，I_RR tuned wavelength results

Fig. 4. Combined interpolation curve of wavelength parameters in I_PH linear tuning section

Fig. 5. Laser wavelength parameter-control table test system

Fig. 6. Wavelength stability of 20 consecutive scans

Fig. 7. F-P etalon demodulation system

Fig. 8. F-P etalon demodulation wavelength

Fig. 9. FBG demodulation system

Fig. 10. FBG demodulation experimental results

Fig. 11. Impulse response wavelength change curve