We report high-speed optical modulation in a resonant tunneling relaxation oscillator consisting of a resonant tunneling diode (RTD) integrated with a unipolar optical waveguide and incorporated in a package with a coplanar waveguide transmission line. When appropriately biased, the RTD can provide wide-bandwidth electrical gain. For wavelengths near the material band edge, small changes of the applied voltage give rise to large, high-speed electroabsorption modulation of the light. We have observed optical modulation at frequencies up to 14 GHz, associated with subharmonic injection locking of the RTD oscillation at the fundamental mode of the coplanar transmission line, as well as generation of 33 ps optical pulses due to relaxation oscillation.
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1 March 1999
Research Article|
March 01 1999
Optical modulation in a resonant tunneling relaxation oscillator
J. M. L. Figueiredo;
J. M. L. Figueiredo
Department of Electronics and Electrical Engineering, University of Glasgow, Glasgow G12 8LT, United Kingdom
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C. R. Stanley;
C. R. Stanley
Department of Electronics and Electrical Engineering, University of Glasgow, Glasgow G12 8LT, United Kingdom
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A. R. Boyd;
A. R. Boyd
Department of Electronics and Electrical Engineering, University of Glasgow, Glasgow G12 8LT, United Kingdom
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C. N. Ironside;
C. N. Ironside
Department of Electronics and Electrical Engineering, University of Glasgow, Glasgow G12 8LT, United Kingdom
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S. G. McMeekin;
S. G. McMeekin
Cardiff School of Engineering, University of Wales Cardiff, Cardiff NP2 1XH, United Kingdom
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A. M. P. Leite
A. M. P. Leite
Centro de Fı́sica do Porto—ADFCUP, Universidade do Porto, Rua do Campo Alegre 687, 4169-007 Porto, Portugal
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Appl. Phys. Lett. 74, 1197–1199 (1999)
Article history
Received:
July 16 1998
Accepted:
December 22 1998
Citation
J. M. L. Figueiredo, C. R. Stanley, A. R. Boyd, C. N. Ironside, S. G. McMeekin, A. M. P. Leite; Optical modulation in a resonant tunneling relaxation oscillator. Appl. Phys. Lett. 1 March 1999; 74 (9): 1197–1199. https://doi.org/10.1063/1.123497
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