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 69 for “"C band"”.
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Human C-band chromosomal polymorphisms: frequency and distribution in Orientals
This document only includes an excerpt of the corresponding thesis or dissertation. To request a digital scan of the full text, please contact the Ruth Lilly Medical Library's Interlibrary Loan Department (rlmlill@iu.edu).
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A Quantum Light Source for Quantum Information Applications in the Telecom C-Band
… wavelength window is centred on the telecom C-band (1530 – 1565 nm). Initial experiments in this work demonstrated single-photon emission of a QD light source emitting directly in the telecom C-band, under both continuous wave (CW) and 1-GHz pulsed excitation regimes. The QDs were further …
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Fusion of observations from C-band polarimetric radar and S-band profiler radar during a convective storm
… by utilizing simultaneous observations from a C-Band dual-polarization scanning radar and a vertically pointing S-Band profiler radar. The C-Band radar, used in this study, is known as the Atmospheric Radar for Meteorological and Operational Research (ARMOR) radar, situated in Huntsville, …
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Numerical Simulation and Experimental Investigation of Quantum Dash Lasers at Elevated Temperatures: Design and Operation of Monolithic InAs/InP Quantum Dash Ridge Laser Diodes Operating in the C-Band
… offer higher peak gain and broader gain bandwidths, but show higher phase noise than dots. We develop a quantum dash laser model in a commercial laser simulation package, Crosslight PICS3D, that predicts several device performance characteristics, including threshold current density and …
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Chromosome banding of German cockroach spermatocytes
A chromosome banding protocol for <u>Blattella germanica</u> speramtocytes was developed to reveal locations of constitutive heterochromatin (C-bands). Normality of the acid treatment used to denature basic (histone) proteins, temperature of the salt solution used to extract DNA from unhanded …
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RADAR MONITORING OF HYDROLOGY IN MARYLAND'S FORESTED COASTAL PLAIN WETLANDS: IMPLICATIONS FOR PREDICTED CLIMATE CHANGE AND IMPROVED MAPPING
… and traditional remote sensing methods. C-band synthetic aperture radar (SAR) data could improve the capability to monitor forested wetland hydrology but the abilities and limitations of these data need further investigation. This study examined: 1) the link between climate and wetland …
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Design Of A Material Test Kit For Use From 1.6 Ghz To 26.5 Ghz And Its Use In Evaluation Of Dielectric Properties Of Foam Core Materials Used In Sandwich Composites
… N5242-X vector network analyzer (VNA) in various bands such as R-band, S-band, C-band, G-band, C-band, X-band, P-band and K-band i.e. the dielectric properties of these materials are measured in the frequency range of 1.70 GHz to 26.5 GHz. The rectangular waveguide (RWG) is used for the …
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Tidal Wetland Inundation and Vegetation Phenology from Space: A Synthesis of Approaches for Characterizing Ecological Status and Inundation Dynamics in Tidal Wetlands with Remote Sensing Observations
… approach utilized multitemporal Sentinel-1 C-band SAR imagery. The same decision tree classification was utilized to map non-persistent emergent vegetation, an indicator of tidal freshwater wetlands, with greater than 93% accuracy.</p> <p>Chapter 4 seeks to assess tidal marsh inundation …
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Reconfigurable tunable microwave devices using liquid crystal.
… devices at a low microwave frequency (L to C-band). To demonstrate the possibility of using liquid crystal technology, three different design approaches were pursued: a liquid crystal tunable resonator, a tunable band-pass liquid crystal filter, both at S-band, and liquid crystal tunable …
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Indium arsenide quantum dots for single photons in the communications band
… photon sources in the optical communications C-Band (Conventional Band; 1535 nm-1565 nm wavelength). First, the underlying theory of semiconductor quantum dots and the necessary tools from quantum optics are reviewed. Next, a detailed description is given of the experimental system design, along …
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Advancing acoustic filters for 5G front-ends: Lithium niobate piezoelectric MEMS resonators and filters
… 5G to support the increasing demand for broadband services, development of new front-end technologies is gaining steam to target higher performance at higher frequencies. A class of front-end components that have consistently received much research attention for 5G are the piezoelectric …
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Characterization of third order nonlinearities in TiO₂ waveguides at 1550 nm
… all-optical switching at telecommunications C-band wavelengths. Titanium dioxide does not support two-photon absorption at 1550 nm, has a high refractive index, and a relatively low loss, which allows for high-index-contrast waveguides. The TiO₂ waveguides studied for this thesis were …
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Controlling light-matter interaction with resonant semiconductor nanostructure
… electrical response at the telecommunication C-band, a major spectral choice for optical communication and signal processing in PICs. We also propose a polarisation-independent metasurface superabsorber by exploring the quasi-bound state in the continuum (QBIC) to improve photodetectors’ …
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Frequency down-conversion for quantum networking with nitrogen-vacancy centers in diamond
… not as optimal as conversion to the telecom C-band, losses at 1080 nm are significantly lower (<2 dB/km), and along with the system's high SNR, should enable much longer distance entanglement experiments than previously achieved.
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RELATIVISTIC BACKWARD WAVE OSCILLATOR WITH A GAUSSIAN RADIATION PATTERN AND RELATED TECHNOLOGIES
… provide a HPM Gaussian-like TE11 wave beam, an X-band relativistic BWO (RBWO) is proposed that uses a Bragg reflector instead of a cavity resonator reflector. Therefore, the device of interest is a RBWO consisting of two periodic slow wave structures (SWSs). In the original design, the inner radii …
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Nonlinear applications of step-index and microstructured soft-glass fibres
… zero-dispersion wavelength lying close to the C-band is demonstrated in cross-phase modulation based wavelength conversion and switching applications in the 1.55 µm window. Both a co-polarized pump and probe scheme and a Kerr-shutter configuration are considered. For the same fibre, the …
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Telecom Wavelength Quantum Devices
… Initial experiments succeeded in interfering O-band (1260—1360 nm) photons from an InAs/GaAs QD with dissimilar photons from a laser, an important mechanism for quantum teleportation. Interference visibilities as high as 60 ± 6 % were recorded, surpassing the 50 % threshold imposed by classical …
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Theoretical and experimental studies of optically pumped molecular gas lasers
… emitting in the attractive telecommunication C band region at about 1.5 microns. Estimations and fluorescence measurements suggest the possibility of lasing in the 3 micron region. Lasing was demonstrated for the first time with a 5 ns pump pulse from an optical parametric oscillator using …
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Point-Spread Function Assessment of SG-DBR Based Swept Source for OCT Imaging
… limit width of the PSF central peak and the broadband skirts. Design curves are then created to specify the requirements to obtain a given performance. </p> <p> Next, experimental tests are performed on a JDS Uniphase C-band SG-DBR laser to assess its performance limitations. Finally, by comparing …
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Determination of Bragg Scatter in an Aircraft Generated Wake Vortex System for Radar Detection
… detection at frequencies ranging from VHF to C band (100 MHz to 5 GHz). The mechanism that yields this radar cross section is Bragg scattering from the index of refraction variations due to the atmospheric water vapor and potential temperature fields being mixed by the wake vortex system. …
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