Journal
OPTICS EXPRESS
Volume 19, Issue 8, Pages 7530-7536Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.19.007530
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Funding
- Interconnect Focus Center
- AFOSR MURI for Complex and Robust On-chip Nanophotonics [FA9550-09-1-0704]
- Stanford Graduate Fellowship
- National Science Foundation (NSF) GRFP
- DoD, Air Force Office of Scientific Research [32 CFR 168a]
- National Science Foundation
- Office of Science, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, of the U.S. Department of Energy [DE-AC02-05CH11231]
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We demonstrate a gallium arsenide photonic crystal cavity injection-based electro-optic modulator coupled to a fiber taper waveguide. The fiber taper serves as a convenient and tunable waveguide for cavity coupling with minimal loss. Localized electrical injection of carriers into the cavity region via a laterally doped p-i-n diode combined with the small mode volume of the cavity enable ultra-low energy modulation at sub-fJ/bit levels. Speeds of up to 1 GHz are demonstrated with photoluminescence lifetime measurements revealing that the ultimate limit goes well into the tens of GHz. (C)2011 Optical Society of America
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