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Hybrid unidirectional meta-coupler for vertical incidence to a high-refractive-index waveguide in telecom wavelength
KTH, Superseded Departments (pre-2005), Electromagnetic Theory. KTH, Superseded Departments (pre-2005), Alfvén Laboratory. KTH, Superseded Departments (pre-2005), Microelectronics and Information Technology, IMIT.ORCID iD: 0000-0002-3401-1125
2017 (English)In: Optics Letters, ISSN 0146-9592, E-ISSN 1539-4794, Vol. 42, no 24, 5098-5101 p.Article in journal (Refereed) Published
Abstract [en]

Unidirectional optical manipulation, especially the coupling from a vertical light beam to a waveguide unidirectionally, is desirable in photonic integration. We first propose a hybrid unidirectional meta-coupler for vertical incidence to a high-refractive-index waveguide in telecom wavelength, a periodic plasmonic metasurface composed of metal-insulator-metal unit cells is used for phase matching. Three designs are given for devices working around wavelengths 0.85, 1.31, and 1.55 mu m. The simulated coupling efficiencies are all around 70%, and the 1 dB coupling bandwidths are 29, 82, and 105 nm, respectively. Our approach paves the way for the applications of optical metasurfaces to planar lightwave circuits. (C) 2017 Optical Society of America

Place, publisher, year, edition, pages
OPTICAL SOC AMER , 2017. Vol. 42, no 24, 5098-5101 p.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-220829DOI: 10.1364/OL.42.005098ISI: 000418019100012PubMedID: 29240146Scopus ID: 2-s2.0-85038216950OAI: oai:DiVA.org:kth-220829DiVA: diva2:1172999
Note

QC 20170111

Available from: 2018-01-11 Created: 2018-01-11 Last updated: 2018-01-11Bibliographically approved

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He, Sailing

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