Measurement of refractive index profile of special-shaped preform by sleeve-assistant method

Jiang Lei; Chen Yi; Dai Jiangyun; Liu Nian; Lü Jiakun; Zhang Lihua; Li Fang; He Honglei; Gao Cong; Shen Changle

doi:10.11884/HPLPB202234.220233

Volume 34 Issue 12

Nov. 2022

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Jiang Lei, Chen Yi, Dai Jiangyun, et al. Measurement of refractive index profile of special-shaped preform by sleeve-assistant method[J]. High Power Laser and Particle Beams, 2022, 34: 121006. doi: 10.11884/HPLPB202234.220233

Citation:

Jiang Lei, Chen Yi, Dai Jiangyun, et al. Measurement of refractive index profile of special-shaped preform by sleeve-assistant method[J]. High Power Laser and Particle Beams, 2022, 34: 121006. doi: 10.11884/HPLPB202234.220233

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Measurement of refractive index profile of special-shaped preform by sleeve-assistant method

doi: 10.11884/HPLPB202234.220233

Laser Fusion Research Center, CAEP, Mianyang 621900, China

Received Date: 2022-07-23
Rev Recd Date: 2022-11-12

Available Online: 2022-11-02

Publish Date: 2022-11-02

Abstract

Abstract

The refractive index profile of optical fiber preform can be measured by beam scanning method. Due to the requirements of the refractometer for the length, diameter and shape of preforms, the refractive index profile of special-shaped preforms cannot be measured directly. Thus the sleeve-assistant method is produced. A quarts sleeve is needed to expand the measuring range of the refractometer. The refractive index profile of the same round preform is measured directly by refractometer and by sleeve-assistant method respectively. And the results obtained are consistent, confirming the accuracy of the sleeve-assistant method. The refractive index profiles of the neck-down region of the preform measured confirm that the sleeve-assistant method can improve the test ability of refractometer.
- sleeve-assistant method,
- special-shaped preform,
- refractive index,
- beam scanning method,
- optical fiber material

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References(20)

References

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