Wenzhen Li, Yang Chen, Lei Liao, Yingbo Chu, Nengli Dai, Jinyan Li. Fabrication and Laser Performance of Polarization-Maintaining Erbium-Ytterbium Co-Doped Fiber[J]. Chinese Journal of Lasers, 2022, 49(12): 1206006
- Chinese Journal of Lasers
- Vol. 49, Issue 12, 1206006 (2022)
Fig. 1. Drilling fabrication process of prefabricated rod of polarization maintaining erbium-ytterbium co-doped fiber
Fig. 2. Characterizations of fiber and prefabricated rod. (a) Radial doping concentration of fiber; (b) refractive index profile of prefabricated rod core with cross-section of optical fiber shown in insert
Fig. 3. Structural diagram of Sagnac interference ring for measuring beat length
Fig. 4. Interference image of test fiber
Fig. 5. Test structure for extinction ratio
Fig. 6. Structural diagram of MOPA all-fiber laser
Fig. 7. Efficiencies under different fiber lengths. (a) Slope efficiency; (b) optical-to-optical efficiency
Fig. 8. Spectra at different pump powers. (a) Output spectrum with narrow spectra at different pump powers shown in inset; (b) backward spectra
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