Broadband tunable orbital angular momentum mode converter based on a conventional single-mode all-fiber configuration | Zendy

Min Zhou | Zendy; Zhe Zhang | Zendy; Laipeng Shao | Zendy; Shen Liu | Zendy; Yu Liu | Zendy; Yu Pang | Zendy; Zhiyong Bai | Zendy; Cailing Fu | Zendy; Wei Cui | Zendy; Lin Qi | Zendy; Yiping Wang | Zendy

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Broadband tunable orbital angular momentum mode converter based on a conventional single-mode all-fiber configuration

Author(s) -

Min Zhou,

Zhe Zhang,

Laipeng Shao,

Shen Liu,

Yu Liu,

Yu Pang,

Zhiyong Bai,

Cailing Fu,

Wei Cui,

Lin Qi,

Yiping Wang

Publication year - 2021

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.421967

Subject(s) - optics , broadband , bandwidth (computing) , single mode optical fiber , fiber bragg grating , angular momentum , mode volume , dispersion shifted fiber , long period fiber grating , polarization maintaining optical fiber , materials science , physics , optical fiber , fiber optic sensor , telecommunications , computer science , quantum mechanics

A broadband tunable orbital angular momentum (OAM) mode converter based on a helical long-period fiber grating (HLPFG) inscribed in a conventional single-mode fiber (SMF) is experimentally demonstrated. The proposed all-fiber OAM mode converter is based on the core-cladding mode dual resonance near the dispersion turning point (DTP). The converter can operate with a bandwidth of 303.9 nm @ -3 dB and 182.2 nm @ -10 dB, which is, as far as we know, the widest bandwidth for a conventional SMF. Furthermore, the bandwidth of the OAM mode can be dynamically tuned within a large dynamic range (>80 nm) by simply twisting the fiber clockwise (CW) or counterclockwise (CCW). The dynamic tunability of the bandwidth of the proposed OAM mode generator may find vital applications in large-capacity optical fiber communication systems.

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