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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 169 for “"Multimode"”.
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Interference and correlation effects in multimode quantum systems. Multimode systems.
… study of interference and correlation effects in multimode and continuum mode quantum systems. We are concerned with interference effects in multiport devices which in a sense are generalised Mach-Zehnder interferometers. It is shown how these multimode devices can be employed for the study of …
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Multimode and Multiband Microstrip Antennas
… In this work, the designs are also extended into multimode antennas achieving multi-frequency operation.
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Multimode Microresonator Optical Frequency Combs
This thesis presents an experimental and theoretical investigation of multi-mode microresonator optical frequency combs. Experimentally, we drive a single microresonator with multiple independent lasers to observe the scattering of a probe field from a soliton frequency comb, as well as study the …
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Optical Coherence Sensors in Multimode Fibers
… and utilized broadly in optical sensing systems. Multimode fibers (MMFs) offer low coupling loss, high compatibility with various light sources, and insensitivity to ambient fluctuations, which are preferred for reliable and low-cost sensing systems. Therefore, the combination of optical coherence …
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Energy Management Control for Multimode Microgrid Renewable Integration
The need for storing energy has grown in correlation with the need for renewable and distributed energy resources. Designing a storage unit system which complements the distributed generation is required for increased efficiency and reducing the burden on the utility grid. The energy storage model …
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Multimode Circuit Quantum Electrodynamics With Superconducting Metamaterial Resonators
… The combination of cQED architectures with multimode resonator systems can provide a flexible platform for performing analog quantum simulations, storing quantum information, and generating complex entangled states. Metamaterial resonant structures made from arrays of superconducting lumped …
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High performance photodetectors for multimode optical data links
… order of 50 Ym or smaller, suitable for glass multimode or single mode fibre applications. The recent successful commercialisation of very large core diameter plastic optical fibre in systems based around 650 nm emitters, as well as the recent emergence of new polymer materials enabling …
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Multimode Ultrastrong Coupling with FW-BICs in THz Metasurface
… Showing that this structure produces results in multimode USC. The rabbi splitting was used in the two-band Hamiltonian to predict the FW-BIC locations. Coupled mode theory (CMT) was used to approximate the upper and lower polaritons. Since this is multimode coupling, it is more complex, and a …
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Integrated microlenses and multimode interference devices for microflow cytometers
… simulated. An alternative device, the multimode interference device (MMI), which makes use of the self-imaging phenomenon in multimode waveguides, was also studied due to its less stringent fabrication tolerances. Optical components including channel waveguides, to route light on chip, …
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Interference of Intensity Noise in a Multimode Nd:YAG Laser
… Rev. A 66, 063803 (2002)]. The behaviour of the multimode laser operating near the threshold of a longitudinal mode is measured. Transitions in the cross spectrum are noted in some pairs of longitudinal modes, for an arbitrary but small pump rate above threshold of a longitudinal mode. It has …
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Linear burn rate of green ionic liquid multimode monopropellant
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2020-02-28 without embargo terms
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Imaging through optical multimode fiber: towards ultra-thin endoscopy
… the concept of utilizing a single optical multimode fiber (MMF) as a stand-alone image conduit. MMF is fascinating as an optical waveguide attributed to its ultra-small footprint, high data throughput, low cost, and flexibility. Nevertheless, the mode mixing and dispersion effects inherent …
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Direct modulation of multimode vertical cavity surface emitting lasers
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2001.
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Electrospray power processing unit for a monopropellant-electrospray multimode thruster
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-04-12 without embargo terms
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Electrospray Thrusters in Chemical-Electric Multimode Propulsion for Small Satellites
… to both modes on the same spacecraft (i.e. multimode propulsion) is extremely useful. Unfortunately, the conventional propellants used by chemical and electric thrusters are highly incompatible, making this particularly difficult on small spacecraft that lack the mass, power, and volume to …
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A UHF Multimode Array Feed for the Westford Radio Telescope
A novel UHF Multimode Array Feed (MMAF) has been created for MIT’s Westford Radio Telescope. The MMAF is a dual-linear focal plane array installed concentrically with the existing QRFH feed on the telescope, enabling a combined system capable of transmit or receive on UHF radar and satcom …
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Broadband single and multimode quantum light generation using optical nonlinearities
There is a growing effort in many fields of physics to bridge the classical and quantum realms. To our best understanding, our world is governed by the laws of quantum mechanics, but some of its most interesting features - such as the ability to morph uncertainty and noise - are washed out when …
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Adaptive Mode Control in Few-Mode and Highly Multimode Fibers
Few-mode fibers (FMFs) and multimode fibers (MMFs) can provide much higher data-carrying capacities compared with single-mode fibers. But in order to achieve this goal, one must address the challenge of intermodal coupling and dispersion. Therefore the ability to accurately control the optical …
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Modeling, Analysis, and Design of Subcarrier Multiplexing on Multimode Fiber
… on the use of subcarrier multiplexing (SCM) in multimode fibers, utilizing carrier frequencies above what is generally utilized for multimode fiber transmission, to achieve high bit rates. In the high frequency region (i.e., frequencies larger than the intermodal bandwidth), the magnitude …
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