Sökning: "polarization"

Visar resultat 1 - 5 av 499 avhandlingar innehållade ordet polarization.

  1. 1. Modeling and Compensation of Polarization Effects in Fiber-Optic Communication Systems

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Cristian Bogdan Czegledi; [2018]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; nonlinear compensation; Channel model; model-based; polarization demultiplexing; polarization-mode dispersion; polarization drift; backpropagation; PMD; DBP;

    Sammanfattning : Optical communication systems that exploit the orthogonality between two polarizations of light convey information over optical fibers by modulating data over the two polarizations. In an idealized scenario, the two polarizations propagate through the fiber without interfering. LÄS MER

  2. 2. Optical Communication System Characterization using Polarization Properties

    Detta är en avhandling från ; Chalmers tekniska högskola; Gothenburg

    Författare :Mats Sköld; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polarization; wavelength division multiplexing; all-optical networks; optical performance monitoring;

    Sammanfattning : .... LÄS MER

  3. 3. Light propagation in an anisotropically scattering medium

    Detta är en avhandling från KTH Royal Institute of Technology

    Författare :Elena Vasileva; KTH.; [2018]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; anisotropic light scattering; scattering material characterization; polarization dependent scattering; diffusive media; hierarchical structure; biocomposites; wood modification; transparent wood; microfibrils angle; organic materials; polymer active devices; dye lasers; coherence; polarization; degree of polarization.; Physics; Fysik;

    Sammanfattning : Scattering is the main phenomenon of light-matter interaction. In this thesis, we consider one specific case of light propagation in a material whose structure causes anisotropic optical scattering - transparent wood. LÄS MER

  4. 4. Photospheric emission from structured, relativistic jets applications to gamma-ray burst spectra and polarization

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Christoffer Lundman; KTH.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; gamma-ray bursts; photospheric emission; radiative processes; polarization; special relativity;

    Sammanfattning : The radiative mechanism responsible for the prompt gamma-ray burst (GRB) emission remains elusive. For the last decade, optically thin synchrotron emission from shocks internal to the GRB jet appeared to be the most plausible explanation. LÄS MER

  5. 5. Mode and Polarization Control in VCSELs using Surface Structures

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Åsa Haglund; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; single mode; dynamics; surface relief; Semiconductor laser; polarization; vertical-cavity surface-emitting laser; sub-wavelength grating; fabrication;

    Sammanfattning : The vertical-cavity surface-emitting laser (VCSEL) is a novel, low-cost light source with many attractive performance characteristics, such as low operating current, circular output beam, and high modulation bandwidth at low currents. This together with its easy integration into two-dimensional arrays has made it an established transmitter in short-distance single and parallel fiber-optical links, and new applications are continuously arising. LÄS MER