LED-switchable High-Q Packaged THz Microbeam Resonators

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Title: LED-switchable High-Q Packaged THz Microbeam Resonators
Author(s): Hanham, SM
Ahmad, MM
Lucyszyn, S
Klein, N
Item Type: Journal Article
Abstract: This paper describes the design, fabrication and experimental characterization of photonic crystal microbeam cavity resonators for the terahertz band implemented using suspended dielectric rectangular waveguide (DRW) in high resistivity silicon. Electrical quality factors of up to 11,900, combined with small modal volumes of 0.28 mm3 and 0.077 mm3, are demonstrated for devices operating at 100 and 200 GHz, respectively. The devices are found to be extremely light-sensitive, opening up new opportunities for light-controlled switching devices at terahertz frequencies. It is shown that the quality factor of the resonator can be tuned and the resonance extinguished through photo-illumination with an infrared light-emitting diode (IR LED). Additionally, the questions of thermal tunability and thermal stability of the resonators are examined. The demonstrated resonators are inherently suited to integration with DRW and by silicon bulk micromachining represent an attractive approach for realizing microphotonic integrated circuits for terahertz systems-on-a-substrate.
Publication Date: 25-Jan-2017
Date of Acceptance: 29-Nov-2016
URI: http://hdl.handle.net/10044/1/44034
DOI: https://dx.doi.org/10.1109/TTHZ.2016.2634547
ISSN: 2156-342X
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Start Page: 199
End Page: 208
Journal / Book Title: IEEE Transactions on Terahertz Science and Technology
Volume: 7
Issue: 2
Sponsor/Funder: Engineering & Physical Science Research Council (EPSRC)
Funder's Grant Number: EP/M001121/1
Copyright Statement: © 2017 The Authors. This work is licensed under a Creative Commons Attribution 3.0 License. For more information, see http://creativecommons.org/licenses/by/3.0/
Keywords: Science & Technology
Physical Sciences
Engineering, Electrical & Electronic
Physics, Applied
Optical resonators
photonic crystals
photonic-integrated circuits
submillimeter-wave integrated circuits
Publication Status: Published
Appears in Collections:Faculty of Engineering
Electrical and Electronic Engineering
Faculty of Natural Sciences

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