J.Z. acknowledge the support from the National Nature Science Foundation of China (61571218, 61571216, 61301017, 61371034, 61101011), and the Ph.D. Programs Foundation of Ministry of Education of China (20120091110032, 20110091120052). Y. H. acknowledge the support from the UK EPSRC under the QUEST Programme Grant (EP/I034548/1)

ACS Readhead

B Wood

BR Johnson

BT Hallam

C Dietlein

D Lerner

E Doumanis

F Liu

H Zhu

HF Ma

IR Hooper

J Hao

JB Pendry

JK Gansel

L Wu

LM Li

Lorenzo Moncelsi

N Yu

P Weis

SJ Elston

WS Kang

Y Ye

Y Zhao

Scientific Reports

PubMed

Transformation optics (TO) offers a geometrical approach in designing optical components of any shapes. Although it has been proven to be a versatile and robust mathematical tool, TO has, however, limited control over electromagnetic (EM) field polarization in the process of coordinate transformation. Such a technique can be extended to a so-called â € Field transformation (FT)â € which provides direct control over the impedance and polarization signature of an arbitrary object. In this work, we demonstrate a FT application by designing and manufacturing a novel waveplate, which defies the fundamental limit of bandwidth and incident angles and has the ability of converting between TE (transverse electric) and TM (transverse magnetic) as well as LCP (left-handed circular polarization) and RCP (right-handed circular polarization). Such a waveplate can also be applied to different operating modes for both transmitted and reflected waves by adjusting its thickness and adding an optional metallic ground plane. The proposed design approach presents a remarkable degree of advance for designing future devices with arbitrary polarization controls, artificial waveguides or antenna substrates and polarization-enabled resonators with angle-insensitive functionalities. Our approach has far reaching implications applicable from radio to optical frequencies

Zhao, Junming

Zhang, Lianhong

Li, Jensen Tsan Hang

Feng, Yijun

Dyke, Amy

Haq, Sajad

Hao, Yang

Hong Kong University of Science and Technology Institutional Repository

A Wide-angle Multi-octave Broadband Waveplate Based on Field-transformation Approach

Zhao, J

Zhang, L

Li, J

Feng, Y

Dyke, A

Haq, S

Hao, Y

Queen Mary Research Online

A Wide-angle Multi-Octave Broadband Waveplate Based on Field Transformation Approach

AbstractTransformation optics (TO) offers a geometrical approach in designing optical components of any shapes. Although it has been proven to be a versatile and robust mathematical tool, TO has, however, limited control over electromagnetic (EM) field polarization in the process of coordinate transformation. Such a technique can be extended to a so-called “Field transformation (FT)” which provides direct control over the impedance and polarization signature of an arbitrary object. In this work, we demonstrate a FT application by designing and manufacturing a novel waveplate, which defies the fundamental limit of bandwidth and incident angles and has the ability of converting between TE (transverse electric) and TM (transverse magnetic) as well as LCP (left-handed circular polarization) and RCP (right-handed circular polarization). Such a waveplate can also be applied to different operating modes for both transmitted and reflected waves by adjusting its thickness and adding an optional metallic ground plane. The proposed design approach presents a remarkable degree of advance for designing future devices with arbitrary polarization controls, artificial waveguides or antenna substrates and polarization-enabled resonators with angle-insensitive functionalities. Our approach has far reaching implications applicable from radio to optical frequencies.</jats:p

Junming Zhao

Lianhong Zhang

Jensen Li

Yijun Feng

Amy Dyke

Sajad Haq

Yang Hao

Crossref

https://qmro.qmul.ac.uk/xmlui/bitstream/handle/123456789/15811/Zhao%202016%20A%20Wide-angle%20Multi-Octave%20Broadband.pdf?sequence=1

A Wide-angle Multi-Octave Broadband Waveplate Based on Field Transformation Approach

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Hong Kong University of Science and Technology Institutional Repository

Queen Mary Research Online

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