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Photonic crystal fiber metalens

Yang, Jingyi and Ghimire, Indra and Wu, Pin Chieh and Gurung, Sudip and Arndt, Catherine and Tsai, Din Ping and Lee, Ho Wai Howard (2019) Photonic crystal fiber metalens. Nanophotonics, 8 (3). pp. 443-449. ISSN 2192-8614.

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Conventional optical fiber has excellent performance in guiding light, which has been widely employed for long-distance optical communication. Although the optical fiber is efficient for transmitting light, its functionality is limited by the dielectric properties of the core’s and cladding’s materials (e.g. Ge-doped-silica and silica glasses). The spot size of the transmitted light is diverging and restricted by the diffraction limit of the dielectric core, and the numerical aperture is determined by the refractive index of the fiber materials. However, the novel technology of metasurfaces is opening the door to a variety of optical fiber innovations. Here, we report an ultrathin optical metalens directly patterned on the facet of a photonic crystal optical fiber that enables light focusing in the telecommunication regime. In-fiber metalenses with focal lengths of 28 μm and 40 μm at a wavelength of 1550 nm are demonstrated with maximum enhanced optical intensity as large as 234%. The ultrathin optical fiber metalens may find novel applications in optical imaging, sensing, and fiber laser designs.

Item Type:Article
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Yang, Jingyi0000-0001-8219-9460
Additional Information:© 2019 Ho Wai Howard Lee et al., published by De Gruyter. This work is licensed under the Creative Commons Attribution 4.0 Public License. Received November 23, 2018; revised December 24, 2018; accepted January 7, 2019. Published Online: 2019-02-21. The authors acknowledge the support from the Robert A. Welch Foundation (Funder Id:, award number: AA-1956-20180324), the Young Investigator Development Program, and the Office of Vice Provost for Research at Baylor University. The authors acknowledge the Center for Microscopy and Imaging (CMI) at Baylor University for technical support during the microscopy and image analysis.
Funding AgencyGrant Number
Robert A. Welch FoundationAA-1956-20180324
Baylor UniversityUNSPECIFIED
Subject Keywords:metasurfaces; photonic crystal fibers; plasmonics; fiber optics components
Issue or Number:3
Record Number:CaltechAUTHORS:20190404-084846584
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Official Citation:Yang, J., Ghimire, I., Wu, P., et al. (2019). Photonic crystal fiber metalens. Nanophotonics, 8(3), pp. 443-449. Retrieved 4 Apr. 2019, from doi:10.1515/nanoph-2018-0204; doi: 10.1515/nanoph-2018-0204
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:94446
Deposited By: Tony Diaz
Deposited On:04 Apr 2019 16:02
Last Modified:03 Oct 2019 21:04

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