Enhanced cladding pump absorption of ytterbium-doped double cladding fiber with internally modified cladding structures

Liu, R; Yan, DP; Chen, M; Wang, JM; Shi, JH; Zhu, QX

Liu, R (corresponding author), Huazhong Univ Sci & Technol, WuHan Natl Lab Optoelect, Wuhan 430074, Peoples R China.

OPTICAL MATERIALS EXPRESS, 2020; 10 (1): 36

Abstract

We report an ytterbium-doped 20/400 mu m double cladding fiber with an internally modified circular inner cladding. Through four fluorine-doped (F-dop......

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