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  • Received: Mar. 25, 2016

    Accepted: Aug. 12, 2016

    Posted: Jan. 28, 2019

    Published Online: Aug. 2, 2018

    The Author Email: Na Chen (

    DOI: 10.3788/COL201614.100602

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    Pengxiang Yang, Zhenyi Chen, Na Chen, Shupeng Liu, Bo Lu, Tingyun Wang. Raman scattering enhancement characteristic of NbCl5- and Nb2O5-doped silica fibers[J]. Chinese Optics Letters, 2016, 14(10): 100602

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Chinese Optics Letters, Vol. 14, Issue 10, 100602 (2016)

Raman scattering enhancement characteristic of NbCl5- and Nb2O5-doped silica fibers

Pengxiang Yang1, Zhenyi Chen1, Na Chen1,*, Shupeng Liu1, Bo Lu2, and Tingyun Wang1

Author Affiliations

  • 1Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200072, China
  • 2Laboratory for Microstructures, Shanghai University, Shanghai 200444, China


Two kinds of Nb-doped silica fibers, an NbCl5-doped fiber and an Nb2O5-doped fiber, are fabricated and characterized in this Letter. First, the refractive index profiles of both fibers are obtained, and then their Raman spectra are measured with 785 nm exciting light. The Nb-doped fibers’ Raman spectra are compared with a conventional GeO2-doped single-mode silica fiber that is prepared with the same method and under the same conditions. As a result, the Raman gain coefficients of the Nb-doped silica fiber core are obtained. The experimental results show that Nb2O5 doping can enhance the Raman scattering intensity of the optical fibers.

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