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Embedded Graphene Photodetectors for Silicon Photonics
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.ORCID iD: 0000-0003-1234-6060
KTH, School of Information and Communication Technology (ICT), Integrated Devices and Circuits.
University of Siegen, Germany .
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2014 (English)Conference paper (Refereed)
Abstract [en]

Graphene has extraordinary electronic and optoelectronic properties such as high carrier mobility, large charge-carrier concentrations, tunability via electrostatic doping, wavelength-independent absorption, and relatively low dissipation rates [1]. The combination of its electro-optical properties with its manufacturability and CMOS integrability makes graphene an extremely promising candidate for active photonic devices [2,3]. Because of its two-dimensional appearance, graphene has a limited light absorption, which is not enough to fulfill the requirements of silicon photonics technology. Recently, the integration of graphene with silicon waveguides [4,5] has been shown for on-chip applications [6]. In these solutions graphene is placed on top and outside of the waveguide yielding only limited light-graphene interaction. We introduce novel photo-detector architecture by embedding CVD-graphene inside the slot layer of deposited high-k slot waveguides that are compatible with back-end-of-the-line manufacturing of photonic integrated circuits (PICs). This approach leads to a high light-graphene interaction due to the high mode concentration in the slot region[7]. This results in enhanced absorption and enables a very compact photodetector design.

Place, publisher, year, edition, pages
2014. 43-44 p.
, IEEE Device Research Conference Proceedings, ISSN 15483770
Keyword [en]
Light absorption, Photodetectors, Photonic devices, Photonics, Photons, Waveguides
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-159048DOI: 10.1109/DRC.2014.6872291ISI: 000346309800019ScopusID: 2-s2.0-84906568999ISBN: 978-147995405-6OAI: diva2:782991
72nd Annual Device Research Conference (DRC), JUN 22-25, 2014, Santa Barbara, CA, USA

QC 20150123

Available from: 2015-01-23 Created: 2015-01-20 Last updated: 2015-01-23Bibliographically approved

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Naiini, Maziar M.Vaziri, SamSmith, Anderson D.Östling, Mikael
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