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T-Space at The University of Toronto Libraries >
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Please use this identifier to cite or link to this item: http://hdl.handle.net/1807/31978

Title: Interface Plasmon Polariton Waveguides and Sensors
Authors: Xu, Yechen
Advisor: Aitchison, J. Stewart
Department: Electrical and Computer Engineering
Keywords: Plasmonics
Optics
Microfluidic
Issue Date: 12-Jan-2012
Abstract: This thesis presents a novel micron-sized trapezoidal plasmonic waveguide design, called an Interface Plasmon Polariton waveguide. The guiding mechanism is explained using an effective index method and validated by simulations. The mode cut-off conditions and single-mode guiding properties are both determined using simulation and experimentally demonstrated. The waveguides have a long 1 mm propagation distance at 1550 nm wavelengths. Using this IPP waveguide, novel dielectric rib, dielectric varying-density hole-array, and metal-groove Bragg grating $\emph{in vitro}$ sensors are designed, fabricated, and characterized. The devices have a 1100 nm/RIU sensitivity and 0.006 RIU sensing resolution obtained from measurements and are validated by theory. The IPP sensors developed in this thesis not only offer competitive plasmonic sensitivity, sensing resolution, signal to noise ratio, result reproducibility, and reusability, they are also easy to fabricate and simple to package. Therefore, these new sensor designs are an enabler for lab-on-a-chip platforms to adapt plasmonic technology.
URI: http://hdl.handle.net/1807/31978
Appears in Collections:Doctoral

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