Graphene opto-electronics for data communication, image sensing and plasmonics
Frank Koppens
Institute of Science and Technology, 08860 Castelldefels (Barcelona), Spain 2ICREA – Institució Catalana de Recerça i Estudis Avancats, Barcelona, Spain. Frank.koppens@icfo.eu
Electrical control and detection of light and polaritons are at the heart of nanophotonics and opto-electronics. Two-dimensional materials have emerged as a toolbox for in-situ control of a wide range of polaritons: plasmons, excitons and phonons [1]. By stacking these materials on top of each other, heterostructures of these materials can be controlled at atomic scale, with extremely high quality and clean interfaces. In this talk, we will show several examples of 2d material heterostructure devices with novel ways of exciting, controlling and detecting polaritons.
The Germanium Zener-Emitter for Silicon Photonics
Roman Koerner, Daniel Schwarz, Caterina Clausen, Michael Oehme, Inga A. Fischer, and Joerg Schulze
Institute of Semiconductor Engineering, University of Stuttgart Pfaffenwaldring 47, Stuttgart, 70569 Germany
Email: koerner@iht.uni-stuttgart.de
Si-Photonic transceivers are classified by their operating wavelength, power consumption and integration in Si to sustain cost-effectiveness. Applying Ge as optical active material in a Zener-Emitter structure, has proven to provide a competitive solution for the integrated semiconductor optical amplifier (SOA) on Si.
Hybrid integration of carbon nanotubes in silicon photonic resonators
Elena DURAN-VALDEIGLESIAS1, Weiwei ZHANG, Carlos ALONSO-RAMOS, Xavier LE ROUX, Samuel SERNA, Thi-Hong-Cam HOANG, Matteo BALESTRIERI, Delphine MARRIS-MORINI, Eric CASSAN, Francesca INTONTI, Francesco SARTI, Niccolò CASELLI, Federico LA CHINA, Massimo GURIOLI, Arianna FILORAMO, Laurent VIVIEN
Centre de Nanosciences et de Nanotechnologies, Univ. Paris Sud, CNRS, Université Paris Saclay, 91405 Orsay, France
Department of Physics, University of Florence European Laboratory for Non-linear Spectroscopy, 50019 Sesto Fiorentino (FI), Italy
LICSEN, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay 91191 Gif-sur-Yvette Cedex, France
elena.duran@u-psud.fr
On-chip integration of all photonic components in the silicon platform is an important goal to accomplish high efficiency, low energy consumption, low cost and device miniaturization. However, silicon does not have efficient light emission or detection in the telecommunication wavelength range (close to 1.3µm and 1.55µm). Hence, hybrid integration of III-V materials or germanium is commonly adopted for the implementation of lasers and photodetectors. Nevertheless, these heterogeneous integration schemes compromise the low cost of using silicon [1]. Carbon nanotubes (CNTs) have recently been proposed as an attractive onedimensional light emitting material [2]. Interestingly, semiconducting single wall carbon nanotubes (SWNTs) are a versatile material with room temperature light detection and emission in the near-infrared. SWNTs also exhibit intrinsic room temperature optical gain [3], which makes them a very interesting candidate for the realization of lasers in Si photonics. In addition, SWNTs have shown compatibility with Si CMOS process. Furthermore, recent advances in polymer-assisted selection of semiconducting SWNT and deposition techniques, poise this solution-processed approach to deliver a high quality material produced at large volumes and low cost.
Integrated magneto-plasmonics for non-reciprocal optical devices
Giovanni MAGNO, Vy YAM, Béatrice DAGENS
C2N, Orsay site, Université Paris-Sud, bâtiment 220
91405 Orsay cedex, France
beatrice.dagens@c2n.upsaclay.fr
Integration of optical isolators and circulators has remained for many years a crucial technological issue which makes difficult the insertion of active components in photonic circuits (PICs). More generally, use of non-reciprocal (NR) transmission in photonic systems could considerably enrich possible architectures. The design of optical guided structure with NR functionality requires simultaneous spatial and time-reversal symmetry breakings in the waveguide (WG). Whereas spatial symmetry breaking is easy to obtain by suitable geometrical design, time-symmetry breaking requires non-linear interaction of the propagative wave with the medium. Magneto-optical materials can provide this non-linearity. Especially the transverse magneto-optical Kerr effect (TMOKE) is well-adapted to guiding configurations and thus to integration in PICs. The main magneto-optical materials exploited for TMOKE induced non-reciprocal transmission at telecom wavelengths are garnet oxides like Bi or Ce substituted Ytrium iron garnets (Bi:YIG, Ce:YIG), and ferromagnetic metals like FeCo.