| Ultrafast Direct Modulation of a Single-Mode Photonic Crystal Nanocavity Light-Emitting Diode |
15 Nov 2011 |
7 pages |
| Authors:
Gary Shambat; Bryan Ellis; Arka Majumdar; Jan Petykiewicz; Marie A Mayer; Tomas Sarmiento; James Harris; Eugene E Haller; Jelena Vuckovic; STANFORD UNIV CA DEPT OF ELECTRICAL ENGINEERING
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 | Low-power and electrically controlled optical sources are vital for next generation optical interconnect systems to meet strict energy demands. Current optical transmitters consisting of high-threshold lasers plus external modulators consume far too much power to be competitive with future electrical interconnects. Here we demonstrate a directly modulated photonic crystal nanocavity light-emitting diode (LED) with 10 GHz modulation speed and less than 1 fJ per bit energy of operation, which is ... |
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| Ultralow-Threshold Electrically Pumped Quantum-Dot Photonic-Crystal Nanocavity Laser |
May 2011 |
5 pages |
| Authors:
Bryan Ellis; Marie A Mayer; Gary Shambat; Tomas Sarmiento; James Harris; Eugene E Haller; Jelena Vuckovic; STANFORD UNIV CA DEPT OF ELECTRICAL ENGINEERING
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| Efficient, low-threshold and compact semiconductor laser sources are under investigation for many applications in high-speed communications, information processing and optical interconnects. The best edge-emitting and vertical-cavity surface-emitting lasers have thresholds on the order of 100 microA (refs 1,2), but dissipate too much power to be practical for many applications, particularly optical interconnects. Optically pumped photonic-crystal nanocavity lasers represent the state of the art in low-threshold lasers; however, to be practical, ... |
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| Ultra-Low Power Fiber-Coupled Gallium Arsenide Photonic Crystal Cavity Electro-Optical Modulator |
11 APR 2011 |
8 pages |
| Authors:
Gary Shambat; Bryan Ellis; Marie A. Mayer; Arka Majumdar; Eugene E. Haller; Jelena Vuckovic; STANFORD UNIV CA DEPT OF ELECTRICAL ENGINEERING
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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 ... |
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| Nanobeam Photonic Crystal Cavity Light-Emitting Diodes |
Jan 2011 |
4 pages |
| Authors:
Gary Shambat; Bryan Ellis; Jan Petykiewicz; Marie A Mayer; Tomas Sarmiento; James Harris; Eugene E Haller; Jelena Vuckovic; STANFORD UNIV CA DEPT OF ELECTRICAL ENGINEERING
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| We present results on electrically driven nanobeam photonic crystal cavities formed out of a lateral p-i-n junction in gallium arsenide. Despite their small conducting dimensions, nanobeams have robust electrical properties with high current densities possible at low drive powers. Much like their two-dimensional counterparts, the nanobeam cavities exhibit bright electroluminescence at room temperature from embedded 1250 nm InAs quantum dots. A small room temperature differential gain is observed in the ... |
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