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 10 of 10 for “"micro-cavities"”.
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Tunable micro-cavities in photonic band-gap yarns and optical fibers
… otherwise periodic structures act as optical micro-cavities that enable precise design of the fibers' spectral response. Fabrication of these composite fibers by thermal drawing of a macroscopic preform in the viscous state requires solving material selection challenges in order to identify …
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Density Functional Study of Hydrogen in Amorphous Silicon
… potential. For isolated Si-H bonds (i.e. in micro-cavities without any bond reconstruction) the energetics are not consistent with observations. However, if the remaining Si reconstructs with a nearby silicon creating a 5-fold coordinated defect then the energetics are in agreement with …
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All-optical processing for terabit/s wavelength division multiplexed systems using two-photon absorption in a semiconductor micro-cavity
… Two-photon absorption within a resonant microcavity is an ideal candidate for high-speed transmission line performance monitoring, and can be easily integrated with a dispersion compensation module. The major advantage of using a microcavity structure is that the signal is only enhanced …
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Subcooled flow boiling heat transfer and critical heat flux in water-based nanofluids at low pressure
… particles during nanofluids boiling. A confocal-microscopy-based examination of the test section revealed nanoparticles deposition not only changes the number of micro-cavities on the surface, but also the surface wettability. A simple model was used to estimate the ensuing nucleation site …
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One-dimensional photonic crystal / photonic wire cavities based on silicon-on-insulator (SOI)
… PhC structures embedded in PhW waveguide micro-cavities could become essential components for wavelength selective devices, especially for possible application in WDM systems. The high quality factor, Q, and confinement of light in a small volume, V, are important for optical signal …
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Characterization of wave transport in non-conservative media with random and correlated disorder
… two-dimensional aperiodic Thue-Morse pattern of micro-cavities onto a square lattice is demonstrated, making it amenable to the tight-binding description"--Abstract, page iv.</p>
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High frequency Pound-Drever-Hall optical ring resonator sensing
… comparatively low finesse of the ring resonator cavities. The high frequency facilitates the use of the same modulation signal to separately probe the phase information of different integrated ring resonators with quality factors of 8.2 x10^5 and 2.4 x10^5. The large free spectral range of small …
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An experimental study of the flow boiling of refrigerant-based nanofluids
… mechanism of nanoparticles filling up the micro-cavities on test surface is also responsible for decreased heat transfer and is a strong function of particle number density.
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Novel nanolasers, nano-LEDs, and modal cutoff confinement light emitters
… metal-cavity quantum-dot surface-emitting micro-lasers. Different sizes of metal-DBR cavities are fabricated with cavity volume reduction both in the lateral and vertical dimensions following our theoretical design rules to optimize the performance. One of the smallest electrical injection …
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Dielectric micro-cavity surface-emitting lasers
… and experimental studies on such dielectric micro-cavity surface-emitting lasers are presented. In addition, issues related to cavity size reduction are also investigated. A theoretical model, including the electronic band structure of the active material and the optical properties of the …