Electro-absorption and electro-refraction in an InAs quantum dot waveguide modulator

David Malins; Alvaro Gomez-Iglesias; Edik U. Rafailov; W Sibbett; Alan Miller

doi:10.1109/LPT.2007.901093

Electro-absorption and electro-refraction in an InAs quantum dot waveguide modulator

David Malins, Alvaro Gomez-Iglesias, Edik U. Rafailov, W Sibbett, Alan Miller

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Optical transmission measurements are reported in the 1.3-mu m region in an InAs quantum-dot (QD) waveguide modulator using a supercontinuum generator. A quantum-confined Stark shift of 15 nm was demonstrated in a five-layer QD stack with a field of 270 KV/cm. The electrically induced change in absorption has been measured and the change in refractive index (up to 0.001) has been estimated via the Kramers-Kronig relations. This highlights the potential of such a device as an electro-absorption or electrooptic phase modulator at telecommunication wavelengths.

Original language	English
Pages (from-to)	1118-1120
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	19
Issue number	15
DOIs	https://doi.org/10.1109/LPT.2007.901093
Publication status	Published - Jul 2007

Keywords

electroabsorption
electrorefraction
semiconductor quantum dots (QDs)
supercontinuum
PHASE MODULATION
WELL STRUCTURES

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10.1109/LPT.2007.901093

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abstract = "Optical transmission measurements are reported in the 1.3-mu m region in an InAs quantum-dot (QD) waveguide modulator using a supercontinuum generator. A quantum-confined Stark shift of 15 nm was demonstrated in a five-layer QD stack with a field of 270 KV/cm. The electrically induced change in absorption has been measured and the change in refractive index (up to 0.001) has been estimated via the Kramers-Kronig relations. This highlights the potential of such a device as an electro-absorption or electrooptic phase modulator at telecommunication wavelengths.",

keywords = "electroabsorption, electrorefraction, semiconductor quantum dots (QDs), supercontinuum, PHASE MODULATION, WELL STRUCTURES",

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AU - Gomez-Iglesias, Alvaro

AU - Rafailov, Edik U.

AU - Sibbett, W

AU - Miller, Alan

PY - 2007/7

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AB - Optical transmission measurements are reported in the 1.3-mu m region in an InAs quantum-dot (QD) waveguide modulator using a supercontinuum generator. A quantum-confined Stark shift of 15 nm was demonstrated in a five-layer QD stack with a field of 270 KV/cm. The electrically induced change in absorption has been measured and the change in refractive index (up to 0.001) has been estimated via the Kramers-Kronig relations. This highlights the potential of such a device as an electro-absorption or electrooptic phase modulator at telecommunication wavelengths.

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KW - electrorefraction

KW - semiconductor quantum dots (QDs)

KW - supercontinuum

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KW - WELL STRUCTURES

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JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

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Electro-absorption and electro-refraction in an InAs quantum dot waveguide modulator

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Keywords

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