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 133 for “"Optical Components"”.
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Bio-inspired optical components
… is fundamental to improving and extending optical science and engineering as well as producing novel optical elements. Improvement in this understanding should not only include work to understand the interaction with traditional engineering materials but also should target the understanding …
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Integrated optical components for quantum key distribution
… and hand held devices demands miniaturizing the optical components that are used in typical QKD boxes, hence reducing its size and cost. The aim of the work in this thesis is firstly investigating novel approaches to realising integrable single photon sources and detectors for applications such …
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Analysis of Quasi-Optical Components for Far-Infrared Astronomy
… with the development and analysis of quasi-optical components used in experiments to measure of the CMB in the terahertz and submillimetre wavebands. I have concentrated on corrugated horn structures in the Planck and QUBIC experiments. A precise analysis of the electromagnetic and optical …
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High speed nonlinear optical components for next-generation optical communications
… in cost, size and/or energy consumption. Optical signal processing techniques may be deployed in next-generation optical networks for simple tasks such as wavelength conversion, demultiplexing and format conversion at high speed (≥100Gb.s-1) to alleviate the pressure on existing core …
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Dynamic and stimuli-responsive multi-phase emulsion droplets for optical components
Dynamic micro-optical components have revolutionized imaging, sensing, and display technologies. Multi-phase emulsions are micro-scale droplets formed from multiple immiscible material components suspended in a fluid medium. An interesting aspect of these droplets is that by tailoring the chemistry …
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Technology and policy drivers for standardization : consequences for the optical components industry
Optical communications promise the delivery of high bandwidth service to all types of customers. The potential for optical communications is enormous and has generated excitement and anticipation over the last decade. However, the emergence of a growing market has not materialized and the 1990s …
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Determination of Mueller matrix elements in the presence of imperfections in optical components
… (PSA) arrangement with the optical components P and A rotating with a fixed speed ratio (3:1) was originally introduced to determine nine Mueller matrix elements from Fourier analysis of the output signal of a photodetector. The arrangement is modified to the P'PSAA' …
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Design and development of thin optical components for nonimaging applications = Diseño y desarrollo de componentes ópticos delgados para aplicaciones anidólicas
… light transfer. Moreover, in general, these new optical systems can be made with fewer components and thus with more tolerance to manufacturing errors. This makes nonimaging optics an essential tool in the optic designs for illumination systems, concentrating photovoltaic, among others. …
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A novel configuration of all-optical differential protection scheme
Advantages of the optical current sensing techniques have stimulated the development of the optical differential protection schemes for busbar protection. However, these optical differential schemes adopt mixed optical-numerical processes that use a platform based on modern numerical/microprocessor …
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Whispering photons : on-chip biophotonic integrated circuits for point-of-care diagnostics
… is not a single biomedical application where optical components are not applied. If we can come up with a framework that can miniaturize these optical components on a chip, it can offer various advantages in terms of scalability, portability, cost and improved performance for real-time …
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Design and fabrication of a hi-fidelity free space optical Grover multiport for sensing applications
Recent advances in optical interferometry have involved the development of unbiased multiport devices using linear optical components that have the potential to yield significant advancements in sensing capabilities for relatively small increases in size and complexity. The unbiased four port case, …
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Integrated high-repetition-rate femtosecond lasers at 1.55 [mu]m
… limited by the 100-fs aperture jitter. However, optical sampling can overcome the jitter limit by using femtosecond lasers that have jitter as low as 100 as, which is a three orders of magnitude improvement when compared to electronics. Currently, most of these lasers exist as bulk or fiber …
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Development of terahertz diffractive optics and plasmon-phonon polaritonics components /
… and variable frequency polaritonic infrared optical components is described. Development and performance of direct laser ablation fabricated multilevel phase Fresnel lenses and metal Soret zone plates for focusing of 0.6 and 4.7 THz frequency radiation are discussed in the first part of this …
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Crosstalk and Signal Integrity in Ring Resonator Based Optical Add/Drop Multiplexers for Wavelength-Division-Multiplexing Networks
… at the time of writing this thesis, all-optical networks are a solution to the increased bandwidth requirements of data communication allowing architectures to become increasingly integrated. High density integration of optical components leads to potential ‘Optical/Photonic’ …
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Scaling Sensitivity of Focused Laser Differential Interferometry Across Facilities
… (FLDI) is a novel technique that leverages opticalinterference to measure density fluctuations within high-speed fluids. This technique provides excellent spatial and temporal resolution compared to traditional measurement techniques by offering a non-intrusive diagnostic with fast sample …
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Integrated microlenses and multimode interference devices for microflow cytometers
… by µflow cytometry.<br/><br/>Several promising optical detection methods are still in their infancy in terms of integration on to a single chip and improvements can be made to existing integrated methods. Manipulation of a free optical beam in microfluidic channels is identified as a major need …
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Tunable Linear and Nonlinear Metasurfaces Based on Hybrid Gold-Graphene Plasmons
<p>Optical Metasurfaces are planar structures that are patterned with subwavelength structures and are very thin compared to the wavelength of light. Despite their thinness, these structured materials can strongly interact with incident light to effect the functionalities of conventional optical …
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Fabrication and Optoelectronic Characterization of Nanoscale Resonance Structures
… optics has alternatively used discrete optical components such as lenses, gratings, and polarizers to accomplish equivalent control over optical radiation. This dissertation contributes to the larger body of literature that applies lessons learned in RF and microwave resonance …
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Design of a linear cavity and a characterization setup for multi-pass transmission electron microscopy
In this thesis, the different electron optical components necessary to build a linear cavity for multi-pass transmission electron microscopy are analyzed and simulated. Moreover, a prototype of the core component, the gated mirror, was designed and some preliminary experimental testings were …
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Reduced Indium Tin Oxide as a Transparent Superconductor
Absorption of optical light in superconducting electronics is a major limitation on the quality of circuit architectures that integrate optical components with superconducting components. Such absorption causes losses in the optics and quasiparticle generation in the superconductor, decreasing the …
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