Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 22 for “"microresonators"”.
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Non-Hermitian Whispering Gallery Mode Optical Microresonators and Their Applications
<p>Whispering-gallery-mode (WGM) optical microresonators, in which light propagates along the circular rims due to the total internal reflection, have attracted broad attention in the past two decades. Owing to the ultrahigh quality factor and the small mode volume, WGM resonators can significantly …
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Linear and non linear coupling effects in sequence of microresonators
… networks on chip. Several type of optical microresonators, both in a single and coupled configuration (CROW, SCISSOR), are discussed starting from the fundamental theory till dealing with novel configurations. The coupling between a Mach-Zehnder interferometer and such configuration of …
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The taiji and infinity-loop microresonators: examples of non-hermitian photonic systems
… studies the characteristics of integrated microresonators (MRs) built by passive (no gain) and non-magnetic materials and characterized by both Hermitian and non-Hermitian Hamiltonians. In particular, I have studied three different microresonators: a typical Microring Resonator (MR), a …
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Integrating nanostructured artificial receptors with whispering gallery mode optical microresonators via inorganic molecular imprinting techniques
… microsphere Whispering Gallery Mode optical microresonators are coated with a silica thin film templated by a small fluorescent dye, fluorescein isothiocyanate, which serves as our model target. Oxygen plasma degradation and solvent extraction of the template are compared. Extracted optical …
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Concentric Microresonators Design For Dispersion Engineering and Scalable Electron-Beam Lithography for Si and SiN Photonic Platforms
… systems. In most PIC applications, waveguides, microresonators, and subwavelength gratings (SWGs) serve as the fundamental building blocks for realizing diverse on-chip optical functionalities. Despite extensive advances in design and fabrication, further progress requires new approaches that …
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Reduced-order modelling, circuit-level design and SOI fabrication of microelectromechanical resonators
… research aspects concerning radio frequency (RF) microresonators and switches. First, a new approach for compact modeling and simulation of these devices is presented. Then, a combined process flow for their simultaneous fabrication on a SOI substrate is proposed. Compact models for …
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THEORY, FABRICATION, AND EXPERIMENTATION OF PHONONIC CRYSTALS IN MEMS AT MICRO/NANO SCALE: ENGINEERING OF THERMAL AND RF PHONONS TO APPLICATIONS IN THERMOELECTRICS AND MICRORESONATORS
… applications in thermoelectric materials, microresonators and acoustic filters, and also the prospective applications of PnCs in MEMS.</p>
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Ultra-high-Q Microresonator with Applications towards Single Nanoparticle Sensing
… here also pave the way for using active lasing microresonators as particle sensors, in which mode splitting serves as the origin of the radio frequency beatnote in the laser which indicates the binding of nanoparticles. It also lays a solid ground for using microresonators for bio-molecule …
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REALIZATION OF TEMPERATURE COMPENSATED ALUMINUM NITRIDE MICRORESONATOR FILTERS WITH BANDWIDTHS BEYOND kt2 LIMIT
… on temperature compensated aluminum nitride microresonators that have fractional bandwidths exceeding the microresonator coupling coefficient, kt2, limit of 0.3%. A method is presented that offers the flexibility of using low Q reactive components to couple temperature compensated aluminum …
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A Photonic Quantum Sensor
… the finite element method simulation. Different microresonators are compared for efficicacy in a quantum node. The response of the resonator to the input field in the presence of an atom is characterized. Two quantum nodes are connected to form a quantum circuit, and the quantum circuit's …
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Design, fabrication, and characterization of lithium niobate whispering-gallery-mode microdisk and microring resonators and grating couplers
… and large bandwidth for modulation. Photonic microresonators developed in LiNbO3 thin-films serve as the basic design unit of such platforms. This thesis provides preliminary characterizations of LiNbO3 whispering-gallery-mode microring and microdisk resonators, a single-ring filter, and …
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High-Q superconducting coplanar waveguide resonators for integration into molecule ion traps
… and so we fabricated transmission line microresonators-capable of producing large fields in a standing wave at resonance-for eventual integration into 2D ion trap structures. The resonators were superconducting to minimize loss and maximize quality factor. We fabricated the resonators as …
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The physics and chemistry of semiconductor nanocrystals in sol-gel derived optical microcavities
… feedback (DFB) grating structures to spherical microresonators exhibiting whispering-gallery mode lasing. Chapter 4 compares and explicates the differences between silica and titania as host matrices for NCs in terms of their chemical stability in the presence of solvents.
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Manufacturing and aerostatic tunability of opto-mechano-fluidic resonator and its application in viscosity sensing
… couple the phonon modes and photon modes in microresonators and various optical systems have been investigated. However, because of the increased acoustic radiative losses during direct liquid immersion of optomechanical devices, almost all published optomechanical experiments have been …
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Development and implementation of a microresonator impactor for atmospheric particulate sensing
… offers a potential alternative by implementing microresonators as mass sensors. MEMS resonators have high mass sensitivities and have recently seen implementation as particulate matter (PM) monitors. The field of MEMS PM instruments is still limited with a variety of implemented resonator …
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Chalcogenide glass materials for integrated infrared photonics
… fabrication of chalcogenide glass waveguides and microresonators for near- and mid-IR wavelength ranges. Waveguides and optical resonators are key microphotonic elements for many on-chip applications such as telecommunications and chemical sensing. In this thesis, we show that scattering losses …
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Hybrid direct write lithographic strategies for complex hierarchical structures
… which were applied as "stand-up" plasmonic microresonators, (2) dewetting to conduct development-free 2D patterning of isolated sub-micron lines, and, via overlap effects, nanoscale (<100 nm) gratings, (3) block copolymer self-assembly to initiate the simultaneous annealing and alignment of …
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Chip Scale Integrated Optical Sensing Systems with Digital Microfluidic Systems
… microresonator sensors were explored. Polymer microresonators are useful components for chip scale integrated sensing because they can be integrated in a planar format using standard semiconductor manufacturing technologies. Therefore, as a second step, chip scale optical microdisk/ring sensors …
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Constructive utilization of intentional nonlinearity in systems of coupled micro/nanomechanical resonators
… of flexible nanocomponents to the dynamics of microresonators to which they are attached. For a system of two microcantilever resonators coupled by a nanomembrane and under harmonic base excitation, we study the effect of varying the coupling strength on the nonlinear dynamics and show that in …
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Modeling of mechanical energy dissipation of low-dimensional resonators
… intrinsic dissipation in two-dimensional (2D) microresonators. The work aims to reveal the fundamental limit of dissipation and enable looking at the isolated effect of various parameters over a wide range, both of which are inaccessible in experiments. The damping of the flexural mode of a 2D …
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