Fig. 1. Principle of wavelength tuning in MG-Y lasers

Fig. 2. Residual structure

Fig. 3. Basic structure of the DRSN model

Fig. 4. Process for generating control parameter table of MG-Y laser

Fig. 5. Scanned optical power data of MG-Y lasers

Fig. 6. Optimal tuning path in a single tube

Fig. 7. Wavelength coverage of control parameter table within C-band

Fig. 8. Schematic diagram for tuning experimental of MG-Y Lasers

Fig. 9. Laser output wavelength error

Fig. 10. Standard deviation of wavelength demodulation for F-P etalon

Fig. 11. Results of FBG demodulation experiment