Main > Chinese Optics Letters >  Volume 14 >  Issue 10 >  Page 100602 > Article
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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 (na.chen@shu.edu.cn)

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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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## Abstract

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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