| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Convention of Optical Vortices in Two-Helix Long-Period Fiber Gratings |
| Xiao-Qiang Zhang, Rui-Shan Chen, Yong Zhou, Hai Ming, An-Ting Wang** |
Department of optics and Optical Engineering, University of Science and Technology of China, Hefei 230026
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| Cite this article: |
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Xiao-Qiang Zhang, Rui-Shan Chen, Yong Zhou et al 2016 Chin. Phys. Lett. 33 084201 |
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Abstract An effective method to fabricate two-helix long-period fiber gratings (TH-LFGs) is presented. Based on the coupling mode theory, the conversion of optical vortices (OVs) in TH-LFGs are analyzed in detail. The conversions of OVs with different topological charges: $0\to \pm2$ and $1\to3$ are simulated as three examples and the conversion efficiency higher than 98% can be realized.
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Received: 28 April 2016
Published: 31 August 2016
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