Journal
SCIENTIFIC REPORTS
Volume 6, Issue -, Pages -Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/srep32616
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Funding
- National Science Foundation [CMMI-1405078, CMMI-1554189]
- National Natural Science Foundation of China [11504139, 11504140]
- Natural Science Foundation of Jiangsu Province [BK20140167, BK20140128]
- Fundamental Research Funds for Central Universities [JUSRP51517]
- Key Laboratory Open Fund of Institute of Semiconductors of CAS [KLSMS-1405]
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1405078] Funding Source: National Science Foundation
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Mid-infrared spectroscopy is of great importance in many areas and its integration with thin-film technology can economically enrich the functionalities of many existing devices. In this paper we propose a graphene-based ultra-compact spectrometer (several micrometers in size) that is compatible with complementary metal-oxide-semiconductor (CMOS) processing. The proposed structure uses a monolayer graphene as a mid-infrared surface waveguide, whose optical response is spatially modulated using electric fields to form a Fabry-Perot cavity. By varying the voltage acting on the cavity, we can control the transmitted wavelength of the spectrometer at room temperature. This design has potential applications in the graphene-silicon-based optoelectronic devices as it offers new possibilities for developing new ultra-compact spectrometers and low-cost hyperspectral imaging sensors in mid-infrared region.
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