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 6 of 6 for “"Deep-etched"”.
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Theory and design of integrated optical isolators and broadband couplers using Fresnel zone plates
… optics, placed above a short, ridge and deep etched, vertical coupler in a Si waveguide. This optics is placed in order to match the radiating fields to the fiber mode. We use semivectorial simulations with a simple stochastic optimization to design a good integrated optics without …
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Structural analysis of the MIT Micro Rocket Combustion Chamber
… and analysis to characterize the strength of deep reactive ion etched single crystal silicon structures and to clarify the influence of geometry on a structure's characteristic strength. The test specimens used for this work were pressurized cavities with the same geometry as the micro rocket …
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Analysing curved optical waveguides using the finite difference beam propagation method
… much lower loss could be achieved for curved deep-etched ridge waveguides with small radii of curvature by designing the bend to have a section where the curvature of the waveguide linearly changes.
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Microfabricated refractory ceramic structures for micro turbomachinery
… layers (10-100 [mu]m) over time multiplexed deep etched silicon molds. The silicon can be selectively dissolved away to yield high aspect ratio silicon carbide structures with features that are hundreds of microns tall. Positive mold, negative mold, and hybrid Si/SiC processing techniques …
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Integrated chirped Bragg gratings for dispersion control
… mentioned regimes. The device, based on a deeply etched tapered waveguide design, may be fabricated fully post-growth, lending it a significant advantage over current grating designs that require the pattern to be written into the core material and the upper cladding layers subsequently …
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Towards Monolithically Integrated Optical Systems for Communication and Sensing
… layout density in PICs. To address this, a novel deep-etched bending structure is proposed and experimentally validated. This design reduces the bending radius from 800 μm to 37 μm while maintaining a loss as low as 0.1 dB/90°, representing a more than twenty-fold footprint reduction without …