Broadband mode conversion via gradient index metamaterials.
We propose a design for broadband waveguide mode conversion based on gradient index metamaterials (GIMs). Numerical simulations demonstrate that the zeroth order of transverse magnetic mode or the first order of transverse electric mode (TM0/TE1) can be converted into the first order of transverse magnetic mode or the second order of transverse electric mode (TM1/TE2) for a broadband of frequencies. As an application, an asymmetric propagation is achieved by integrating zero index metamaterials inside the GIM waveguide.
College of Physics, Optoelectronics and Energy &Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, No. 1 Shizi Street, Suzhou 215006, China.
HaiXiao
H
Wang
College of Physics, Optoelectronics and Energy &Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, No. 1 Shizi Street, Suzhou 215006, China.
YaDong
Y
Xu
Centre de Recherche sur l'Hétéro-Epitaxie et ses Applications, CNRS, Rue Bernard Gregory, Sophia-Antipolis, 06560 Valbonne, France.
Patrice
P
Genevet
College of Physics, Optoelectronics and Energy &Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, No. 1 Shizi Street, Suzhou 215006, China.
Jian-Hua
JH
Jiang
College of Physics, Optoelectronics and Energy &Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, No. 1 Shizi Street, Suzhou 215006, China.|Key Lab of Advanced Optical Manufacturing Technologies of Jiangsu Province &Key Lab of Modern Optical Technologies of Education Ministry of China, Soochow University, Suzhou 215006, China.
HuanYang
H
Chen