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 11 of 11 for “"Spectral Shaping"”.
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Effects of Aging and Spectral Shaping on the Sub-cortical (Brainstem) Differentiation of Contrastive Stop Consonants
… of the /b-d-g/ stimuli, (3) investigate whether spectral shaping diminishes any aging impairments at the brainstem level; and (4) if so, whether minimizing these deficits improves the behavioral identification of the speech stimuli.</p> <p>Subjects: Behavioral and electrophysiological responses …
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Contrôle spectral par pompage optique des couches minces de dioxide de vanadium (Spectral shaping with optically pumped vanadium dioxide thin films)
… dans l'infrarouge, ce qui exige un contrôle spectral, à la fois en amplitude et en phase."
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Mitigation Of Electromagnetic Interference In Pulse Width Modulated Voltage Source Inverters And Communication Enhancement In Power Lines
… modulated inverter. In particular, an advanced spectral shaping technique is presented, which produces spectral nulls at selected frequencies. The spectral nulls can then be used as communication channels in power line communication systems.
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Towards a high-efficiency micro-thermophotovoltaic generator
… dioxide photonic crystal on the micro-reactor as spectral shaping device efficiency can reach 5%.
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Architectural Improvements Towards an Efficient 16-18 Bit 100-200 MSPS ADC
… was introduced. It combines randomization and spectral shaping of mismatches. With a simple low-pass filter the method can, compared to conventional randomization algorithms, improve the SFDR as well as the SINAD. The main advantage of this technique over previous ones is that, because the …
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Channel modeling and interference rejection for CDMA automatic vehicle monitoring systems
… able to fully exploit the cyclostationarity and spectral correlation in certain DS-SS signals. It is shown how multiple AVM service providers can exist in adjacent channels within the ISM band. It is demonstrated that using the realistic channel models the TDAF can provide substantial improvement …
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Concentric Microresonators Design For Dispersion Engineering and Scalable Electron-Beam Lithography for Si and SiN Photonic Platforms
… providing new tools for dispersion control, spectral shaping, and scalable photonic integration. The demonstrated methods lay the groundwork for next-generation photonic technologies spanning communications, quantum information, sensing, free-space beam shaping, and nonlinear optics.
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Computational and statistical approaches to optical spectroscopy
… expertise for interpreting complex spectral signals. In this thesis, we aim to address some of these challenges by combining modern computational and statistical techniques with physical domain knowledge. In particular, we focus on three aspects where computational or statistical …
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Intracavity coherent interaction of mode-locked pulse train with resonant medium
… pulse train and is further enhanced by means of spectral shaping or polarization modulation of the excitation pulse train. Experiments performed inside a laser cavity show that the atomic coherence is still preserved due to the coherent nature of interaction between the Rb-87 vapor and the …
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System Design And Optimization Of Optical Coherence Tomography
… the shape of the source power spectrum, such as spectral dips. Subsequently, we presented a method where the axial PSF was significantly optimized by suppressing the side lobes occurring because of the irregular shape of the source power spectrum. The optimization was performed through optically …
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Adaptive control of coherent soft X-rays
… there are two ways of controlling it: Shaping the generating laser \emph{light} and designing ideal states of \emph{matter} for the conversion medium. Either of these approaches was closely examined. In addition, going far beyond simply enhancing the conversion process it could be shown …