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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 86 for “"Mach-Zehnder"”.
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Electrooptic mach-zehnder modulators in gallium arsenide
… based on the integrated optics version of the Mach-Zehnder interferometer, using GaAs substrates, were modelled and fabricated for use with these slow-wave electrodes. The variational method, effective-index method, and beam propagation method were used to model the propagation of light in …
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Quadrature-point stabilization of Mach-Zehnder interferometers
… transducer in the reference arm of an all-fiber Mach-Zehnder interferometer.
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Novel Method for Mach-Zehnder Interferometer Phase Stabilization
The Mach-Zehnder Interferometer (MZI) is a device used across many areas of research including quantum computing, optical communication, sensing, and imaging. The proper function of an MZI depends upon the stabilization of the relative phase between its arms as thermal gradients and vibrations can …
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Femtosecond laser fabrication of directional couplers and Mach-Zehnder interferometers
… is important to fabricate reliable couplers and Mach-Zehnder interferometers. To enable telecommunications applications, it is useful to demonstrate their functionality around 1550 nm. We demonstrate the femtosecond laser fabrication of symmetric directional couplers and unbalanced Mach-Zehnder …
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Neuer Optimierungsansatz für die Entwicklung hochkomplexer monolithisch integrierter Indiumphosphid Mach-Zehnder Terabit Transmitterchips
… (PICs) bieten Indiumphosphidbasierte Push-Pull Mach-Zehnder Modulatoren wegen ihrer hohen elektro-optischen Effizienz, geringen Baugröße sowie chirpfreien Modulation ein herausragendes Potential um diesen Herausforderungen auch in Zukunft folgen zu können. Vor diesem Hintergrund wurde für diese …
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Control of a Nonlinear Mach-Zehnder Interferometer for Regeneration Using Digital Signal Processing
… noises. Optical regenerators based on nonlinear Mach Zehnder interferometers (NMZIs) are able to suppress them both. To use a NMZI as a regenerator, the frequency of the pump signal must be kept close to that of the data carrier and the phase difference between the data and pump signals needs to …
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Experimental and theoretical study of an integrated silicon Mach-Zehnder interferometer for chemical sensing applications
… of refraction. Fabrication of the Integrated Mach-Zehnder Interferometer sensor involves several important standard processes such as Chemical Vapor Deposition (CVD) for thin film fabrication, photolithography for mask transfer, and etching for ridge waveguide formation. The detailed …
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Test of Light Speed Constancy With Light Age Using an Active Fiber-Based Mach-Zehnder Interferometer
… to the light age using an active fiber-based Mach-Zehnder interferometer (MZI) illuminated by sunlight. The original sunlight in one arm, which has the age of 8.3 minutes since it was emitted from the sun, interferes with the young light generated by stimulated emission from an optical …
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Digital Twin-Based Modeling and Optimization of InP Mach-Zehnder Modulators and EDFAs for Software-Defined Optical Networks
L'abstract è presente nell'allegato / the abstract is in the attachment
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Reference interferometry techniques for nanodetection and biosensing
… are presented. Experiments performed with a Mach-Zehnder interferometer in parallel with an ultrahigh-Q microresonator for nanodetection of a record polystyrene particle size down to 12.5 nm radius are described. The first interferometry technique employed in this work sees the implementation …
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Regrowth-free monolithic vertical integration of passive and active waveguides
… the data rate within the existing bandwidth. Mach-Zehnder Modulators achieve high spectral density by modulating both the phase and amplitude of light. At the moment, laser light sources and Mach-Zehnder Modulators are built discretely and packaged and coupled thereafter. Photonic Integrated …
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Advanced silicon photonic modulators
Various electrical and optical schemes used in Mach-Zehnder (MZ) silicon plasma dispersion effect modulators are explored. A rib waveguide reverse biased silicon diode modulator is designed, tested and found to operate at speeds up to 13 GHz with a V"L of 1.2 Vcm. MOS capacitor modulator designs …
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MEMS Transducer for Hearing Aid Device
… An optical measurement system based on Mach-Zehnder interferometer is</p>
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Application of acoustic emission sensing for the non-destructive evaluation of advanced composite materials
… material (CFRP) is achieved using an all-fibre Mach-Zehnder interferometric sensor. The basic Mach-Zehnder configuration was modified to achieve the sensitivity needed to detect the low amplitude signals associated with AE. An active homo dyne feedback loop was employed to maintain quadrature, …
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Complementarity and uncertainty in quantum interference
… and uncertainty is developed in the context of Mach-Zehnder interferometry. The effect on the interference pattern contrast of path detection via entanglement with a probe system, is explored and a joint unsharp measurement scheme of the complementary pairs, path and interference, described. The …
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Development of SiOxNy waveguides for integrated quantum photonics
… Reconfigurable quantum circuits consisting of Mach-Zehnder interferometers with near perfect visibilities were fabricated along with a four-port switch. The potential of quantum speedup was illustrated by carrying out the Deutsch-Jozsa algorithm with a fidelity of 100 % using on-demand single …
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High-quality source of fiber-coupled polarization-entangled photons at 1.56 [mu]m
… In addition to the Sagnac source, a linear Mach-Zehnder source at 810 nm was built for the Interdisciplinary Quantum Information Science and Engineering (iQuISE) teaching laboratory, to allow students to observe fundamental quantum phenomena such as the Hong-Ou-Mandel (HOM) dip, the collapse …
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All optical systems for terabit network era
… side-mode suppression ratio > 20 dB. A single Mach-Zehnder modulator was driven with a low power multi- harmonic electrical signal. Furthermore, a large 36 line comb was obtained by the addition of a two cascaded modulators comb source driven with a 90 GHz signal The implementation of an …
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Passive and Thermo-Optic Characterization of Long-Range Surface Plasmon-Polariton Structures in CYTOP
… curves were drawn and S-bends, Y-junctions, Mach-Zehnder interferometers, and couplers were tested. Results show that the fabricated waveguide thicknesses are inconsistent and thinner than designed, and improvement of their fabrication quality is necessary. In thermo-optic measurements, …
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