Ultra-compact spatial filtering with both wide spatial-frequency bandwidth and high transmittance using single-negative material

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 opt...

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Veröffentlicht in:	European physical journal. Applied physics 2010-07, Vol.51 (1), p.10701-6
Hauptverfasser:	Fang, Y.-T., Ouyang, Z.-B., Qiu, G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Bandwidth Exact sciences and technology Filters, zone plates, and polarizers Fundamental areas of phenomenology (including applications) Multilayers Optical elements, devices, and systems Optical materials Optics Photonic bandgap materials Physics Propagation Spatial filtering Transmittance Ultrawideband
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Zusammenfassung:	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.
ISSN:	1286-0042 1286-0050
DOI:	10.1051/epjap/2010075