Polarization selective tunable filter via tuning of Fano resonances in MEMS switchable metamaterials

Author

Zhu, W.M. ; Teng, J.H. ; Zhang, X.H. ; Tsai, J.M. ; Wu, Q.Y. ; Tanoto, H. ; Guo, H.C. ; Bourouina, T. ; Lo, G.Q. ; Kwong, D.L. ; Liu, A.Q.

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

fYear

2012

fDate

Jan. 29 2012-Feb. 2 2012

Firstpage

11

Lastpage

14

Abstract

We experimentally demonstrated polarization selective tuning of Fano resonance in switchable metamaterials based on Microelectromechanical systems (MEMS). The transmission spectra of TE polarized incidence can be tuned while maintain those of the TM polarized incidence by continuously shifting one trapezoid of the cross-shaped unit cell. It measures a Fano resonance frequency shift of 37.9% (low frequency region) and 25.7% (high frequency region) for TE polarized incidence and only 0.8% for TM polarized incidence. Compared with the previous efforts on tunable metamaterials, the switchable metamaterials promises unprecedented tunability, such as single to dual band tuning, polarization selective tuning.

Keywords

metamaterials; microswitches; submillimetre wave filters; MEMS switchable metamaterials; TE polarized incidence; TM polarized incidence; cross-shaped unit cell; dual band tuning; fano resonance frequency; frequency shift; microelectromechanical systems; polarization selective tunable filter; polarization selective tuning; transmission spectra; Frequency measurement; Magnetic materials; Metamaterials; Micromechanical devices; Resonant frequency; Tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

Micro Electro Mechanical Systems (MEMS), 2012 IEEE 25th International Conference on

Conference_Location

Paris

ISSN

1084-6999

Print_ISBN

978-1-4673-0324-8

Type

conf

DOI

10.1109/MEMSYS.2012.6170081

Filename

6170081