Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 6, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4818457
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Funding
- National Basic Research Program of China (973 Program) [2012CB315703]
- National Natural Science Foundation of China [61205054, 61275183]
- Zhejiang Provincial Natural Science Foundation of China [Z1110330, LQ12F05006]
- Excellent Young Faculty Awards Program (Zijin Plan) at Zhejiang University
- Program for New Century Excellent Talents in University [NCET-12-0489]
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We report a highly tunable graphene embedded waveguide which overall modal index is in linear relationship with the in-plane permittivity of graphene and the electro-refraction effect has been significantly enhanced after graphene is embedded. An eight-layer graphene embedded Mach-Zender modulator has been theoretically demonstrated with the advantage of ultra-compact footprint (4 x 30 mu m(2)), high modulation efficiency (20V.mu m), fast modulation speed, and large extinction ratio (35 dB). Our results may promote various on-chip active components, boosting the utilization of graphene in optical applications. (C) 2013 AIP Publishing LLC.
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