Double-Layer Graphene Optical Modulator | Zendy

Ming Liu | Zendy; Xiaobo Yin | Zendy; Xiang Zhang | Zendy

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Double-Layer Graphene Optical Modulator

Author(s) -

Ming Liu,

Xiaobo Yin,

Xiang Zhang

Publication year - 2012

Publication title -

nano letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 4.853

H-Index - 488

eISSN - 1530-6992

pISSN - 1530-6984

DOI - 10.1021/nl204202k

Subject(s) - graphene , materials science , optical modulator , optoelectronics , oxide , modulation (music) , photonics , silicon , electro optic modulator , layer (electronics) , voltage , nanotechnology , optics , phase modulation , physics , quantum mechanics , phase noise , acoustics , metallurgy

Here we report a high-performance double-layer graphene optical modulator. By using two graphene layers and an oxide layer in between to form a p-oxide-n like junction, this modulator operates at 1 GHz with a high modulation depth (~0.16 dB/μm) at a moderate drive voltage (~5 V). Benefited from the symmetrical band structure of graphene near Dirac point, such design eliminates the optical loss widely existing in silicon photonics and has advantages including small footprint, low energy consumption, and low insertion loss.

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