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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 16 — Aug. 11, 2014
  • pp: 19284–19292

Ge/SiGe quantum confined Stark effect electro-absorption modulation with low voltage swing at λ = 1550 nm

D. C. S. Dumas, K. Gallacher, S. Rhead, M. Myronov, D. R. Leadley, and D. J. Paul  »View Author Affiliations


Optics Express, Vol. 22, Issue 16, pp. 19284-19292 (2014)
http://dx.doi.org/10.1364/OE.22.019284


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Abstract

Low-voltage swing (≤1.0 V) high-contrast ratio (6 dB) electro-absorption modulation covering 1460 to 1560 nm wavelength has been demonstrated using Ge/SiGe quantum confined Stark effect (QCSE) diodes grown on a silicon substrate. The heterolayers for the devices were designed using an 8-band k.p Poisson-Schrödinger solver which demonstrated excellent agreement with the experimental results. Modelling and experimental results demonstrate that by changing the quantum well width of the device, low power Ge/SiGe QCSE modulators can be designed to cover the S- and C-telecommunications bands.

© 2014 Optical Society of America

OCIS Codes
(230.0250) Optical devices : Optoelectronics
(230.2090) Optical devices : Electro-optical devices
(230.4110) Optical devices : Modulators
(230.4205) Optical devices : Multiple quantum well (MQW) modulators

ToC Category:
Optoelectronics

History
Original Manuscript: June 9, 2014
Revised Manuscript: July 24, 2014
Manuscript Accepted: July 24, 2014
Published: August 1, 2014

Citation
D. C. S. Dumas, K. Gallacher, S. Rhead, M. Myronov, D. R. Leadley, and D. J. Paul, "Ge/SiGe quantum confined Stark effect electro-absorption modulation with low voltage swing at λ = 1550 nm," Opt. Express 22, 19284-19292 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-16-19284


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