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Waveguide bends by optical surface transformations and optic-null media
KTH, Skolan för elektro- och systemteknik (EES), Elektroteknisk teori och konstruktion. KTH, Skolan för informations- och kommunikationsteknik (ICT), Centra, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.ORCID-id: 0000-0002-3401-1125
2018 (engelsk)Inngår i: Journal of the Optical Society of America. B, Optical physics, ISSN 0740-3224, E-ISSN 1520-8540, Vol. 35, nr 4, s. 944-949Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

We propose what we believe is a novel method to design waveguide bends for metallic waveguides with arbitrary bending angles. The proposed method is based on a new theoretical branch from transformation optics that is referred as to optic surface transformation. Compared with waveguide bends designed by traditional transformation optics, the design process of our method can be made in a graphical way that is very simple and convenient. To realize any waveguide bend designed by the method proposed in this study, one needs only one homogeneous material, i.e., an optic-null medium (even if the bending angles are different for various cases). After some reductions, we find that the optic-null media here can be approximately realized by some anisotropic zero refractive index materials. 2D numerical simulations verify the performance of the designed waveguide bends. The design principle can be extended to the 3D case.

sted, utgiver, år, opplag, sider
Optical Society of America, 2018. Vol. 35, nr 4, s. 944-949
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URN: urn:nbn:se:kth:diva-227637DOI: 10.1364/JOSAB.35.000944ISI: 000428952500049Scopus ID: 2-s2.0-85044993660OAI: oai:DiVA.org:kth-227637DiVA, id: diva2:1204916
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QC 20180509

Tilgjengelig fra: 2018-05-09 Laget: 2018-05-09 Sist oppdatert: 2018-05-09bibliografisk kontrollert

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