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Controlling lightwave in Riemann space by merging geometrical optics with transformation optics
KTH, School of Electrical Engineering and Computer Science (EECS), Electromagnetic Engineering. KTH, School of Engineering Sciences (SCI), Centres, Zhejiang-KTH Joint Research Center of Photonics, JORCEP.ORCID iD: 0000-0002-3401-1125
2018 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 8, no 1, article id 514Article in journal (Refereed) Published
Abstract [en]

In geometrical optical design, we only need to choose a suitable combination of lenses, prims, and mirrors to design an optical path. It is a simple and classic method for engineers. However, people cannot design fantastical optical devices such as invisibility cloaks, optical wormholes, etc. by geometrical optics. Transformation optics has paved the way for these complicated designs. However, controlling the propagation of light by transformation optics is not a direct design process like geometrical optics. In this study, a novel mixed method for optical design is proposed which has both the simplicity of classic geometrical optics and the flexibility of transformation optics. This mixed method overcomes the limitations of classic optical design; at the same time, it gives intuitive guidance for optical design by transformation optics. Three novel optical devices with fantastic functions have been designed using this mixed method, including asymmetrical transmissions, bidirectional focusing, and bidirectional cloaking. These optical devices cannot be implemented by classic optics alone and are also too complicated to be designed by pure transformation optics. Numerical simulations based on both the ray tracing method and full-wave simulation method are carried out to verify the performance of these three optical devices.

Place, publisher, year, edition, pages
Nature Publishing Group, 2018. Vol. 8, no 1, article id 514
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Identifiers
URN: urn:nbn:se:kth:diva-221681DOI: 10.1038/s41598-017-19015-0ISI: 000419941400001Scopus ID: 2-s2.0-85040445799OAI: oai:DiVA.org:kth-221681DiVA, id: diva2:1176312
Funder
Swedish Research Council, 2012AA030402
Note

QC 20180122

Available from: 2018-01-22 Created: 2018-01-22 Last updated: 2018-01-29Bibliographically approved

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He, Sailing

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