Abstract：
: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-Pérot 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.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Wang X,Chen C,Pan L,Wang Jdoi
10.1038/srep32616subject
Has Abstractpub_date
2016-08-30 00:00:00pages
32616issn
2045-2322pii
srep32616journal_volume
6pub_type
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