31 October 2016 Multimode fiber focusing lens based on plasmonic structures
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In the present work, a compact all-fiber plasmonic focusing beam generator with single and multiple spots is proposed and demonstrated in a conventional multimode fiber. Here, the focusing beam generator is composed of air slit arrays perforated through the gold films deposited on the end facet of a multimode fiber. The array of nanoscale slits with varying widths is used to modulate phase distribution of the focused light. An all-fiber focusing beam generator provides many advantages, such as self-alignment, high flexibility, lower insert loss, and easy portability, which is of importance to realize optical trapping, micromanipulation, beam shaping, and fiber integrated devices.
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Yihang Xu, Yihang Xu, Yongjiao Lu, Yongjiao Lu, Zheng Zhu, Zheng Zhu, Jinhui Shi, Jinhui Shi, Chunying Guan, Chunying Guan, Libo Yuan, Libo Yuan, } "Multimode fiber focusing lens based on plasmonic structures", Proc. SPIE 10019, Optoelectronic Devices and Integration VI, 100191C (31 October 2016); doi: 10.1117/12.2246153; https://doi.org/10.1117/12.2246153


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