Chin. Phys. Lett.  2012, Vol. 29 Issue (9): 094209    DOI: 10.1088/0256-307X/29/9/094209
FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
Ultrabroad Terahertz Bandpass Filter Based on a Multiple-Layered Metamaterial with Flexible Substrates
LIANG Lan-Ju1**, YAO Jian-Quan2,3, YAN Xin1
1College of Opto-electronics Engineering, Zaozhuang University, Zaozhuang 277160
2College of Precision Instrument and Opto-electronics Engineering, Institute of Laser and Opto-electronics, Tianjin University, Tianjin 300072
3Key Laboratory of Opto-electronics Information Technology (Ministry of Education), Tianjin University, Tianjin 300072
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LIANG Lan-Ju, YAO Jian-Quan, YAN Xin 2012 Chin. Phys. Lett. 29 094209
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Abstract An ultrabroad and sharp transition bandpass flexible terahertz (THz) filter is designed using a multiple-layered metamaterial. This bandpass filter has excellent filtering capability, with a 3 dB bandwidth of about 0.47 THz and sharp band-edge transitions of 80 dB/THz and 96 dB/THz, respectively, and it can be realized by a coupling individual resonance mode. We find that the geometry parameters have an influence on the transmission profile, which are capable of giving us meaningful guidance in design of high profile bandpass THz filters. The numerical results show that the multiple-layered flexible metamaterial provides an effective way to achieve ultrabroad THz devices.
Received: 13 April 2012      Published: 01 October 2012
PACS:  42.79.Ci (Filters, zone plates, and polarizers)  
  41.20.Jb (Electromagnetic wave propagation; radiowave propagation)  
  78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))  
  42.70.-a (Optical materials)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/29/9/094209       OR      https://cpl.iphy.ac.cn/Y2012/V29/I9/094209
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LIANG Lan-Ju
YAO Jian-Quan
YAN Xin
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