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 7 of 7 for “"vertical coupling"”.
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Vertical waveguide-coupled microring resonator: Design and simulation
… transformation method in calculating the coupling in micron-scale microring resonators. This method has been shown to give fast and accurate results in calculating the properties of in-plane coupling structures. We have adapted this algorithm to analyze the properties of a vertical …
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Regrowth-free monolithic vertical integration of passive and active waveguides
… resulting in lower cost through simpler coupling, lower power consumption, and volume manufacture. The difficulty faced by photonic integration is that different components require different material for their different functions, and so cannot be easily placed onto the same material …
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Long-term investigation of the lunar tide in the equatorial electrojet during stratospheric sudden warmings
… between atmospheric layers is known as vertical coupling. During geomagnetically quiet times, when near-Earth space is not under the influence of solar storms, these processes become important drivers for ionospheric variability. Studying the link between these processes in the lower …
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A Survey of Seasonal, Hemispheric and Interannual Variations in the Gravity Wave Spectrum in the Upper Stratosphere and Lower Mesosphere
… observations provides new insights into the vertical coupling and geographic variability of atmospheric wave dynamics. This study emphasizes the importance of multi-platform GW analysis in advancing our understanding of atmospheric circulation and climate variability.
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Resonant Spatial Light Modulation: Optical Programming and Sensing at the Fundamental Limit
… enabled by four key advances: (i) near-unity vertical coupling to high-finesse microcavities through inverse design, (ii) scalable fabrication of photonic crystal circuits by optimized, 300 mm full-wafer processing, (iii) picometer-precision resonance alignment using automated, closed-loop …
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Large grain Ge growth on amorphous substrates for CMOS back-end-of-line integration of active optoelectronic devices
… could be fabricated in the back-end, optical coupling to devices was addressed. For dense three-dimensional integration of photonic devices, vertical coupling between photonic planes is necessary. Therefore, this thesis begins with the design and simulation of vertical couplers. These couplers …
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Investigation of horizontal meteorological structures in comparison to turbulent structures at a forest edge
… fluxes and for detection of different vertical and horizontal coupling regimes. SODAR/RASS systems were used to investigate boundary layer phenomena. Additionally, a novel, fully automatic Horizontal Mobile Measuring System (HMMS) was successfully developed, applied and assessed within …