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Full-Text Articles in Engineering
A Thermally Wavelength-Tunable Photonic Switch Based On Silicon Microring Resonator, Xuan Wang
A Thermally Wavelength-Tunable Photonic Switch Based On Silicon Microring Resonator, Xuan Wang
FIU Electronic Theses and Dissertations
Silicon photonics is a very promising technology for future low-cost high-bandwidth optical telecommunication applications down to the chip level. This is due to the high degree of integration, high optical bandwidth and large speed coupled with the development of a wide range of integrated optical functions. Silicon-based microring resonators are a key building block that can be used to realize many optical functions such as switching, multiplexing, demultiplaxing and detection of optical wave. The ability to tune the resonances of the microring resonators is highly desirable in many of their applications. In this work, the study and application of a …
Rigid And Non-Rigid Point-Based Medical Image Registration, Nestor Andres Parra
Rigid And Non-Rigid Point-Based Medical Image Registration, Nestor Andres Parra
FIU Electronic Theses and Dissertations
The primary goal of this dissertation is to develop point-based rigid and non-rigid image registration methods that have better accuracy than existing methods. We first present point-based PoIRe, which provides the framework for point-based global rigid registrations. It allows a choice of different search strategies including (a) branch-and-bound, (b) probabilistic hill-climbing, and (c) a novel hybrid method that takes advantage of the best characteristics of the other two methods. We use a robust similarity measure that is insensitive to noise, which is often introduced during feature extraction. We show the robustness of PoIRe using it to register images obtained with …
Effective Reconfigurable Antenna Designs To Enhance Performance And Enable Wireless Powering, Shishir S. Punjala
Effective Reconfigurable Antenna Designs To Enhance Performance And Enable Wireless Powering, Shishir S. Punjala
FIU Electronic Theses and Dissertations
With the increase in traffic on the internet, there is a greater demand for wireless mobile and ubiquitous applications. These applications need antennas that are not only broadband, but can also work in different frequency spectrums. Even though there is a greater demand for such applications, it is still imperative to conserve power. Thus, there is a need to design multi-broadband antennas that do not use a lot of power. Reconfigurable antennas can work in different frequency spectrums as well as conserve power. The current designs of reconfigurable antennas work only in one band. There is a need to design …
Waveguide Microgripper For Identification, Sensing And Manipulation, Amit G. Bhanushali
Waveguide Microgripper For Identification, Sensing And Manipulation, Amit G. Bhanushali
FIU Electronic Theses and Dissertations
A Waveguide Microgripper utilizes flexible optical waveguides as gripping arms, which provide the physical means for grasping a microobject, while simultaneously enabling light to be delivered and collected. This unique capability allows extensive optical characterization of the structure being held such as transmission, reflection or fluorescence. One of the simplest capabilities of the waveguide microgripper is to be able to detect the presence of a microobject between the microgripper facets by monitoring the transmitted intensity of light coupled through the facets. The intensity of coupled light is expected to drop when there is an object obstructing the path of light. …