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Showing 1 to 20 of 737 for “"Mach"”.
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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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Measurement of plasma flows using Mach probe arrays
A rectangular array of three-dimensional Mach probes is constructed and installed in the plasma vessel of the Versatile Toroidal Facility (VTF) at MIT in order to measure ion flow velocity on the cross section of the VTF. The probes are tested using well-characterized toroidal plasma 'blobs' in …
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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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MACH: A model for explaining molecular and cellular mechanisms
… These themes formed the components of the MACH model, which extends previous models of molecular explanations and identifies components to include when teaching students how to explain biological mechanisms. ^ Then a teaching intervention using the MACH model was implemented in an …
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Bifurcating Mach Shock Reflections with Application to Detonation Structure
Numerical simulations of Mach shock reflections have shown that the Mach stem can bifurcate as a result of the slip line jetting forward. Numerical simulations were conducted in this study which determined that these bifurcations occur when the Mach number is high, the ramp angle is high, and …
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Experimental Study of Mach Reflection in Wedge-Driven Detonations
Made available in DSpace on 2014-12-09T18:12:28Z (GMT). No. of bitstreams: 1 7013394.pdf: 4198588 bytes, checksum: 5e3749bcc661b01a9a43463d95eccd68 (MD5) Previous issue date: 1969
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Numerical Methods for All Mach Number flows for Gas Dynamics
An original numerical method to solve the all-Mach number flow for the Euler equations of gas dynamics on staggered grid is presented in this thesis. The system is discretized to second order in space on staggered grid, in a fashion similar to the Nessyahu-Tadmor central scheme for 1D model and …
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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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Mach bands, Hermann grid, and lateral inhibition in the retina
… Despite much research and a long history, the Mach bands illusion has not yet been very well-understood. Quantitative data is lacking, while qualitative data is controversial. The Hennann Grid illusion, equally old, has not yet been fully explored either. A critical and a comparative review of …
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Numerical study of mach number effects in compressible wall-bounded turbulence
… pressure, dilatation, etc) fields. Centreline Mach numbers, Mcl, up to 6.2 have been considered, for which we find that both explicit compressibility terms in the TKE equation such as the pressure-dilatation and dilatational dissipation, and the implicit compressibility such as …
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Measurements of entropy-layer instabilities over cone-ogive-cylinders at Mach 6
… instabilities have been made in the Boeing/AFOSR Mach-6 Quiet Tunnel (BAM6QT) using surface pressure transducers and hot-wire anemometry. A long cone-ogive-cylinder model with interchangeable cone-ogive noses was used to generate the shock curvature that resulted in an entropy layer conducive to …
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A mach 1.95 free-jet facility for experimental investigation of injectant flow patterns
… and constructed. This facility provides a Mach 1.95 flow over a test section area of 6.35 cm by 5.08 cm. The facility was thoroughly tested and proved that it is durable, versatile, and capable of providing repeatable test conditions. When compared to the main supersonic tunnel at VPI & SU, …
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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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