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Free-standing plasmonic metal-dielectric-metal bandpass filter with high transmission efficiency
- Source :
- Scientific Reports, Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
- Publication Year :
- 2017
-
Abstract
- Plasmonic spectrum filtering devices based on metallic nanostructures have attracted wide attention due to their good reliability, ease of fabrication, and wideband tunability. However, the presence of thick substrate significantly limits the structure’s longitudinal size for further optoelectronic integration and reduces the devices’ performance. Here we propose and demonstrate an ultra-thin plasmonic bandpass filter based on free-standing periodic metal-dielectric-metal stack geometry working in the near-infrared wavelength range. The coupling between free-space electromagnetic waves and spatially confined plasmonic modes in the designed structure is systematically investigated. As demonstrated in the calculation and experiment, the free-standing plasmonic filters have more than 90% transmission efficiency and superior angular tolerance. The experimental results are in good agreement with the theoretical calculations. These artificial nanostructured filtering devices may find potential applications in the extremely compact device architectures.
- Subjects :
- Coupling
Multidisciplinary
Materials science
Fabrication
business.industry
Science
Physics::Optics
02 engineering and technology
Dielectric
021001 nanoscience & nanotechnology
01 natural sciences
Electromagnetic radiation
Article
010309 optics
Band-pass filter
Stack (abstract data type)
0103 physical sciences
Optoelectronics
Medicine
Wideband
0210 nano-technology
business
Plasmon
Subjects
Details
- ISSN :
- 20452322
- Volume :
- 7
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Scientific reports
- Accession number :
- edsair.doi.dedup.....c6182635ab39d0752562a339b78ba81c