Session 10 Programmable, Reconfigurable Integrated Photonics and Neural Network 2020 ECIO

These papers were presented in the session Programmable, Reconfigurable Integrated Photonics and Neural Network during the European Conference on Integrated Optics, 22nd edition 2020 in Paris

Broadband Compact Single-Pole Double-Throw Silicon Photonic MEMS Switch (Student Paper)

Alain Y. Takabayashi1, Hamed Sattari1, Pierre Edinger2, Peter Verheyen3, Kristinn B. Gylfason2, Wim Bogaerts4, Niels Quack1
1 École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
2 KTH Royal Institute of Technology, Malvinas väg 10, SE-100 44 Stockholm, Sweden
3 IMEC, 3DSIP Department, Si Photonics Group, Leuven, Belgium
4 Ghent University – IMEC, Department of Information Technology, Photonics Research Group, Technologiepark-Zwijnaarde 15, 9052 Ghent, Belgium
e-mail: alain.takabayashi@epfl.ch

ABSTRACT
We demonstrate a photonic Single-Pole Double-Throw (SPDT) switch based on electrostatically actuated MEMS waveguides implemented in IMEC’s ISiPP50G silicon photonics platform with custom MEMS release post-processing. An average Extinction Ratio (ER) > 23 dB is maintained over a 70 nm bandwidth with a peak ER of 25 dB at 1550 nm while an actuation voltage of 22 V is applied to the curved electrode electrostatic actuator of the device. A compact footprint of 30 μm × 60 μm and a low Insertion Loss (IL) allow for device integration in larger switch networks.
Keywords: Microelectromechanical Systems, Photonic Integrated Circuits, Silicon Photonics, Photonics

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Application-specific Scaling in Programmable Photonic Circuits (Student Paper)

Iman Zand 1; 2 Xiangfeng Chen 1; 2 Wim Bogaerts 1; 2
1Photonics Research Group, Department of Information Technology, Ghent University-IMEC, 9052 Ghent, Belgium
2Center of Nano and Biophotonics, Ghent University, 9052 Ghent, Belgium
e-mail: wim.bogaerts@ugent.be

ABSTRACT
We performed a scaling analysis of programmable hexagonal two-dimensional (2D) waveguide meshes with different shapes. We show that the shape of the meshes can impose restrictions such as high path losses or large foot-prints for certain configurations and applications. We use the graph-based strategy to guide our applicationspecific scaling analysis. The design practices are discussed for implementing the programmable mesh for beam splitters and N N switches. This will provide a guideline of the shape and size for the future programmable photonic circuits.
Keywords: programmable photonic circuits, scaling analysis, hexagonal waveguide meshes, beam splitters, switches, graph-based strategy

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Recursive MZI mesh for integral equation implementation (Student Paper)

Maziyar Milanizadeh1, Elena Damiani1, Tigers Jonuzi1, Mario Junior Mencagli2, Brian Edwards3, David A.B. Miller4, Nader Engheta3, Andrea Melloni1, Francesco Morichetti1
1Dipartimento di Elettronica, Informazione e Bioingegneria – Politecnico di Milano, Milano, 20133 Italy.
2Dept. of Electrical and Computer Engineering – UNC at Charlotte, Charlotte, NC 28223, USA
3Department of ESE – University of Pennsylvania, Philadelphia, Pennsylvania, 19104, USA
4Ginzton Laboratory – Stanford University, Spilker Building, Stanford, CA 94305, USA
mail: maziyar.milanizadeh@polimi.it

ABSTRACT
In this work we present a photonic integrated circuit based on a mesh of Mach-Zehnder Interferometers (MZIs) acting as a programmable photonic equation solver. The working principle is demonstrated by numerical simulations showing all-optical solution of a Fredholm integral equation. A thermally actuated circuit is fabricated on a silicon platform demonstrating the feasibility and programmability of the proposed device concept. Circuit calibration has been experimentally demonstrated and validated by simulations.
Keywords: silicon photonics, reconfigurable PIC, Fredholm integral equations, optical analogue computing

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These papers were presented in the session Programmable, Reconfigurable Integrated Photonics and Neural Network during the European Conference on Integrated Optics, 22nd edition 2020 in Paris

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