Eur. Phys. J. Appl. Phys.
Volume 51, Number 1, July 2010
|Number of page(s)||6|
|Published online||17 June 2010|
Ultra-compact spatial filtering with both wide spatial-frequency bandwidth and high transmittance using single-negative material
Department of Physics, Zhenjiang Watercraft College, 212003, Zhenjiang, P.R. China
2 THz-Technology Research Center of Shenzhen University, Shenzhen, 518060, P.R. China
3 Shenzhen Key Laboratory of Micro-Nano-Photonic Information Technology, Shenzhen, 518060, P.R. China
4 College of Electronic Science and Technology of Shenzhen University, Shenzhen, 518060, P.R. China
Corresponding author: firstname.lastname@example.org
Revised: 5 April 2010
Accepted: 4 May 2010
Published online: 17 June 2010
A new application of multilayer structures containing single-negative material is proposed as spatial filter. The spatial filter has an ultra-compact structure (only two periods) and is based on that the transmittance of waves through the structure is not sensitive to the incident angle. Through optimised structure parameters, the filter permits waves propagating within a wide spatial-frequency bandwidth and with perfect transmittance. The spatial-frequency bandwidth is tunable by adjusting structure parameter and frequency.
© EDP Sciences, 2010
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