Fiber-guided modes conversion using superposed helical gratings

OPTICS COMMUNICATIONS

卷:386

Article

Ma, Yancheng¹  Fang, Liang²  Wu, Guoan¹ 

[1] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Hubei, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China

关键词: Superposed fiber gratings;    Vector modesOrbital angular momentum;    Mode conversion;   

DOI  :  10.1016/j.optcom.2016.11.007

来源: Elsevier

【 摘 要 】

Optical fibers can support various modal forms, including vector modes, linear polarization (LP) modes, and orbital angular momentum (OAM) modes, etc. The modal correlation among these modes is investigated via Jones matrix, associated with polarization and helical phase corresponding to spin angular momentum (SAM) and OAM of light, respectively. We can generate different modal forms by adopting superposed helical gratings (SHGs) with opposite helix orientations. Detailed analysis and discussion on mode conversion is given as for mode coupling in optical fibers with both low and high contrast index, respectively. Our study may deepen the understanding for various fiber-guided modes and mode conversion among them via fiber gratings.

【 授权许可】

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