Lei Jiang, Yi Chen, Jiangyun Dai, Nian Liu, Jiakun Lü, Lihua Zhang, Fang Li, Honglei He, Cong Gao, Changle Shen. Measurement of refractive index profile of special-shaped preform by sleeve-assistant method[J]. High Power Laser and Particle Beams, 2022, 34(12): 121006
- High Power Laser and Particle Beams
- Vol. 34, Issue 12, 121006 (2022)
Fig. 1. Measuring principle of refractive-index profile of preform
Fig. 2. Diagrammatic sketch of sleeve-assistant method
Fig. 3. Refractive index profiles of preform measured by refractometer directly and by sleeve-assistant method and measurement error
Fig. 4. Refractive index profiles of the neck-down region of preform and fiber core measured by sleeve-assistant method
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