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Analysis of Generating Cylindrical Vector Beams Using a Few-Mode Fiber Bragg Grating

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6 Author(s)
Zhongxi Lin ; Dept. of Opt. & Opt. Eng., Univ. of Sci. & Technol. of China, Hefei, China ; Anting Wang ; Lixin Xu ; Biao Sun
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An efficient numerical model is proposed to generate cylindrical vector (CV) beams by use of a few-mode fiber Bragg grating (FM-FBG) written directly in an ytterbium-doped fiber (YDF). Based on multilayer method, we analysis the transverse modes competition between LP01 and LP11 modes under various conditions. We propose that a pure CV beam can be generated by completely depressing LP01 mode through a doughnut doping few-mode fiber or using a wavelength filter.

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Lightwave Technology, Journal of  (Volume:30 ,  Issue: 22 )