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Electro-optic modulation in bulk silicon using surface plasmon resonance

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O_Faolain_2016_PNFA_Electro_AAM.pdf (528.6Kb)
Date
01/01/2016
Author
Debnath, Kapil
Damas, Pedro
O'Faolain, Liam
Funder
EPSRC
Grant ID
EP/F001622/1
Keywords
Surface plasmons
Integrated optoelectronic circuits
Modulators
Silicon photonics
QC Physics
Electrical and Electronic Engineering
Hardware and Architecture
Condensed Matter Physics
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
NDAS
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Abstract
We propose and present simulated results for a new design of an optical modulator based on Surface Plasmon Polariton (SPP) resonance. The modulator is realized on a bulk silicon substrate, thus offering an opportunity for front-end integration with electronic circuits. The device consists of a dielectric waveguide evanescently coupled to a SPP mode at the interface between bulk silicon and metal. By using SPP resonance we achieved an ultra-high spectral sensitivity (∼5000 nm/refractive index unit) with large modulation bandwidth (90 nm). For a refractive index change of 0.02, we achieved 100 nm shift in resonance wavelength and a modulation depth of ∼10 dB.
Citation
Debnath , K , Damas , P & O'Faolain , L 2016 , ' Electro-optic modulation in bulk silicon using surface plasmon resonance ' , Photonics and Nanostructures : Fundamentals and Applications , vol. 18 , pp. 31-35 . https://doi.org/10.1016/j.photonics.2015.11.002
Publication
Photonics and Nanostructures : Fundamentals and Applications
Status
Peer reviewed
DOI
https://doi.org/10.1016/j.photonics.2015.11.002
ISSN
1569-4410
Type
Journal article
Rights
Copyright © 2016 Elsevier B.V. All rights reserved.This work is made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://dx.doi.org/10.1016/j.photonics.2015.11.002
Description
The authors acknowledge funding from the EPSRC in the UK under the UK Silicon Photonics project.
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  • University of St Andrews Research
URI
http://hdl.handle.net/10023/9956

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