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Dynamic dispersion tuning of silicon photonicwaveguides by microelectromechanical actuation
KTH, School of Electrical Engineering (EES), Micro and Nanosystems.ORCID iD: 0000-0001-7249-7392
KTH, School of Electrical Engineering (EES), Micro and Nanosystems. Grenoble Institute of Technology - INP Phelma.
KTH, School of Electrical Engineering (EES), Micro and Nanosystems.ORCID iD: 0000-0001-9008-8402
2017 (English)Conference paper, Published paper (Refereed)
Abstract [en]

Efficient nonlinear silicon photonics rely on phase-matching through finewaveguide dispersion engineering. We experimentally demonstrate dynamic dispersion tuningof 800 ps/nm/km in a silicon waveguide ring resonator, by using microelectromechanicalactuation of an adjacent suspended waveguide rim.

Place, publisher, year, edition, pages
2017. p. SW1N. 3-
Keywords [en]
Dispersion, MEMS, silicon photonics, nonlinear optics, microelectromechanical systems, silicon, waveguides, dispersion, dispersion engineering, tuning
National Category
Nano Technology Atom and Molecular Physics and Optics Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Electrical Engineering; Materials Science and Engineering; Physics
Identifiers
URN: urn:nbn:se:kth:diva-207815OAI: oai:DiVA.org:kth-207815DiVA, id: diva2:1098617
Conference
CLEO: Science and Innovations, 2017
Projects
VR-HET
Funder
Swedish Research Council, 66681
Note

QC 20170529

Available from: 2017-05-24 Created: 2017-05-24 Last updated: 2018-09-14Bibliographically approved
In thesis
1. Photonic MEMS for optical information technologies
Open this publication in new window or tab >>Photonic MEMS for optical information technologies
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Photonic integrated circuits (PICs) combine hundreds of optical components on a chip, and can enable fast communications, high-performance computing, and improved sensing. PICs, made by miniaturized optical waveguides, require many reconfigurable elements to enable programmable functionalities and to compensate for fabrication variations and environmental factors. However, current reconfiguration methods consume large amounts of electrical power, which is a bottleneck for their scalability, and limits their applications. A promising technology to alleviate this bottleneck is photonic microelectromechanical systems (MEMS), which provides low-power reconfiguration of PICs using electromechanical actuation. This thesis reports on several photonic MEMS devices and technologies that enable low-power reconfiguration for PICs, and bring new functionalities towards efficient nonlinear optics, optical beam steering, and photonic Lab-on-chips (LoCs). A fundamental element of reconfigurable PICs is the phase shifter, and this thesis introduces novel photonic MEMS phase shifters with low power consumption, low optical losses, and linear actuation, and applies them to reconfigurable filtering. Moreover, photonic MEMS bring novel functionalities arising from the mechanical movement of waveguide components, and, in this thesis, a method to tune waveguide dispersion for efficient nonlinear optics in silicon, and two types of reconfigurable waveguide gratings for low-power optical beam steering are developed. The photonic MEMS platform introduced in this thesis can be combined with polarization diversity schemes by using a novel suspended polarization beam splitter. In addition, other technologies addressing challenges in integrated photonics are introduced, such as a lithium niobate on insulator (LNOI) platform that combines grating couplers, high confinement waveguides, and Bragg gratings, for electro-optic modulation and efficient nonlinear optics; and a cost-efficient method to integrate photonic sensors into LoCs for healthcare applications. The technologies introduced in this thesis have potential to enable large-scale, power-efficient, and highly functional PICs, with prospects for more efficient and more functional optical information technologies.

Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2018. p. iii-xi, 79
Series
TRITA-EECS-AVL ; 2018:55
Keywords
Micro-electro-mechanical systems (MEMS), photonics, silicon photonics, photonic integrated circuits (PIC), lithium niobate photonics, ring resonator, polarization beam splitter (PBS), microfluidic integration, lab-on-chip (LoC), optical beam steering, nonlinear optics
National Category
Nano Technology Other Physics Topics
Research subject
Electrical Engineering; Physics; Materials Science and Engineering
Identifiers
urn:nbn:se:kth:diva-235069 (URN)978-91-7729-910-3 (ISBN)
Public defence
2018-10-12, M2, Brinellvägen 64, Stockholm, 10:00 (English)
Opponent
Supervisors
Projects
VR-HETMORPHIC
Funder
Swedish Research Council, 621-2012-5364EU, Horizon 2020, 780283
Note

QC 20180917

Available from: 2018-09-17 Created: 2018-09-14 Last updated: 2018-09-17Bibliographically approved

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