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Control of Fano asymmetry in plasmon induced transparency and its application to plasmonic waveguide modulator
Cited 173 time in
Web of Science
Cited 180 time in Scopus
- Authors
- Issue Date
- 2012-08
- Publisher
- Optical Society of America
- Citation
- Optics Express, Vol.20 No.17, pp.18994-18999
- Abstract
- In this paper, we derive a governing equation for spectral asymmetry in electromagnetically induced transparency (EIT). From the key parameters of asymmetry factor - namely dark mode quality factor Q(d), and frequency separation between bright and dark mode Delta omega(bd) = (omega(b) - omega d)-, a logical pathway for the maximization of EIT asymmetry is identified. By taking the plasmonic metal-insulator-metal (MIM) waveguide as a platform, a plasmon-induced transparency (PIT) structure of tunable frequency separation Delta omega(bd) and dark mode quality factor Q(d) is suggested and analyzed. Compared to previous works on MIM-based plasmon modulators, an order of increase in the performance Fig. (12dB contrast at similar to 60% throughput) was achieved from the highly asymmetric, narrowband PIT spectra. (C) 2012 Optical Society of America
- ISSN
- 1094-4087
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Related Researcher
- College of Engineering
- Department of Electrical and Computer Engineering
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