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Multiple p-n junction subwavelength gratings for transmission-mode electro-optic modulators
- Source :
- Scientific Reports, SCIENTIFIC REPORTS(7)
- Publication Year :
- 2017
- Publisher :
- Nature Publishing Group, 2017.
-
Abstract
- We propose a free-space electro-optic transmission modulator based on multiple p-n-junction semiconductor subwavelength gratings. The proposed device operates with a high-Q guided-mode resonance undergoing electro-optic resonance shift due to direct electrical control. Using rigorous electrical and optical modeling methods, we theoretically demonstrate a modulation depth of 84%, on-state efficiency 85%, and on-off extinction ratio of 19 dB at 1,550 nm wavelength under electrical control signals within a favorably low bias voltage range from −4 V to +1 V. This functionality operates in the transmission mode and sustainable in the high-speed operation regime up to a 10-GHz-scale modulation bandwidth in principle. The theoretical performance prediction is remarkably advantageous over plasmonic tunable metasurfaces in the power-efficiency and absolute modulation-depth aspects. Therefore, further experimental study is of great interest for creating practical-level metasurface components in various application areas.
- Subjects :
- Multidisciplinary
Materials science
Extinction ratio
business.industry
Physics::Optics
Biasing
02 engineering and technology
021001 nanoscience & nanotechnology
Article
Amplitude modulation
Wavelength
020210 optoelectronics & photonics
Semiconductor
Transmission (telecommunications)
0202 electrical engineering, electronic engineering, information engineering
Optoelectronics
0210 nano-technology
business
p–n junction
Plasmon
Subjects
Details
- Language :
- English
- ISSN :
- 20452322
- Database :
- OpenAIRE
- Journal :
- Scientific Reports
- Accession number :
- edsair.doi.dedup.....53daf5a19cdba9a760a78e856e74c986
- Full Text :
- https://doi.org/10.1038/srep46508