Design and Analysis of Advanced Photonic Devices for Electromagnetic Transmission and Sensing
Date
2021
Authors
Islam, Saiful
Editors
Advisors
Abbott, Derek
Ng, Brian W.-H.
Ng, Brian W.-H.
Journal Title
Journal ISSN
Volume Title
Type:
Thesis
Citation
Statement of Responsibility
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Abstract
In this thesis, we report the investigation of advanced photonic devices for electromagnetic
transmission and biochemical sensing in the terahertz and optical regimes. The
choice of material for designing a terahertz device is deemed to be one of the most crucial
factors. First, we consider materials that are frequently used in making terahertz
devices. We experimentally demonstrate the optical, thermal, and chemical properties
of various chosen glasses, polymers, and resin to select the optimal material for terahertz.
Second, we perform a broad review on terahertz optical fibres—this includes various
fibre categories, their guiding mechanisms, fabrication methodologies, possible experimental
methodologies, and applications.
Third, we analyse and demonstrate the design of various fibre structures for terahertz
transmission and sensing, and then perform experiments on a hollow core antiresonant
fibre. We demonstrate successful fabrication of an asymmetrical Zeonex fibre using a
novel fabrication method. This is carried out by using a tabletop horizontal extruder
designed for producing polymer filaments. The fabricated fibre is then experimentally
investigated for terahertz transmission and gas sensing.
Fourth, we study optical fibre based surface plasmon resonance biosensors for operation
in the optical regime. Theoretical studies are undertaken to obtain the best possible
sensor in consideration of performance, experimental feasibility, and fabrication. One
of the optimized sensors is then fabricated as a possible candidate for possible realworld
sensing applications.
Finally, we study metasurface planar devices for achieving high sensitivity and quality
factor in the terahertz regime. We first demonstrate a tunable graphene metasurface
that can achieve multi-band absorption and high refractometric sensing. Later, we
demonstrate on an all-dielectric metasurface that reports highest Q-factor in the terahertz
regime. We fabricate and experiment on the dielectric metasurface and find good
agreement with the simulation.
School/Discipline
School of Electrical and Electronic Engineering
Dissertation Note
Thesis (Ph.D.) -- University of Adelaide, School of Electrical & Electronic Engineering, 2021
Provenance
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