Abstract
Graphene's unique optoelectronic properties have been exploited for many photonic applications. Here, we demonstrate a single graphene-based device that simultaneously provides efficient optical modulation and photodetection. The graphene device is integrated on a silicon waveguide and is tunable with a graphene gate to achieve a near-infrared photodetection responsivity of 57 mA/W and modulation depth of 64% with GHz bandwidth. Simultaneous modulation of photocurrent and optical transmission has been achieved, which may lead to unprecedented optoelectronic applications.
Original language | English (US) |
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Pages (from-to) | 2741-2746 |
Number of pages | 6 |
Journal | Nano letters |
Volume | 14 |
Issue number | 5 |
DOIs | |
State | Published - May 14 2014 |
Keywords
- Graphene
- nanophotonics
- optoelectronics
- photodetection
- photonic integration