He Jian, Chen Na, Chen Zhenyi, Liu Shupeng, Shang Yana. Effects of Laser Thermal Processing on Composition Distribution of SiGe Core Silica Cladding Fiber[J]. Laser & Optoelectronics Progress, 2021, 58(3): 3060011
- Laser & Optoelectronics Progress
- Vol. 58, Issue 3, 3060011 (2021)
Fig. 1. Core morphology of untreated SiGe core fiber. (a) Cross section; (b) profile section
Fig. 2. Raman spectra corresponding to dark area and bright area of the fiber cross section
Fig. 3. Schematic of laser thermal processing
Fig. 4. Profile section of the treated fiber at scanning length of 8 mm and HEAT of 700
Fig. 5. Treated fiber at scanning length of 1.5 mm and HEAT of 700. (a) Later view of fiber with interface; (b) cross section of fiber in the left area of interface
Fig. 6. Raman spectra of dot A‒J. (a) Dot A‒E; (b) dot F‒J
Fig. 7. Later view of the treated fiber at scanning length of 1.5 mm and HEAT of 500
Fig. 8. Cross section of fiber core after end-face polishing at center of Fig.7
Fig. 9. Schematic of solidification process corresponding to edge melt with different laser scanning lengths
Fig. 10. Schematic of indefinite interval polishing
Fig. 11. Cross section of the fiber after directional polishing
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