Sökning: "fiber interferometer"

Visar resultat 6 - 9 av 9 avhandlingar innehållade orden fiber interferometer.

  1. 6. Photosensitivity, chemical composition gratings and optical fiber based components

    Detta är en avhandling från Stockholm : KTH

    Författare :Michael Fokine; KTH.; [2002]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; optical fibers; fiber bragg gratings; photosensitivity; thermal stability; NATURAL SCIENCES; NATURVETENSKAP;

    Sammanfattning : The different topics of this thesis include high-temperaturestable fiber Bragg gratings, photosensitivity and fiber basedcomponents.Fiber Bragg gratings (FBG) are wavelength dispersiverefractive index structures manufactured through UV exposure ofoptical fibers. LÄS MER

  2. 7. Experimental multiuser secure quantum communications

    Detta är en avhandling från Stockholm : Department of Physics, Stockholm University

    Författare :Jan Bogdanski; Stockholms universitet.; [2009]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Quantum key distribution; multiparty quantum secret sharing; Sagnac interferometer; “plug play” QKD; Passive Optical Network PON ; decoy states; single mode fiber birefringence compensation; quantum bit error rate; visibility; NATURAL SCIENCES Physics; NATURVETENSKAP Fysik; fysik; Physics;

    Sammanfattning : We are currently experiencing a rapid development of quantum information, a new branch of science, being an interdisciplinary of quantum physics, information theory, telecommunications, computer science, and many others. This new science branch was born in the middle of the eighties, developed rapidly during the nineties, and in the current decade has brought a technological breakthrough in creating secure quantum key distribution (QKD), quantum secret sharing, and exciting promises in diverse technological fields. LÄS MER

  3. 8. Hybrid Plasmonic Devices for Optical Communication and Sensing

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

    Författare :Xu Sun; KTH.; [2017]

    Sammanfattning : Hybrid plasmonic (HP) waveguides, a multi-layer waveguide structure supporting a hybrid mode of surface plasmonics and Si photonics, is a compromise way to integrate plasmonic materials into Si or SOI platforms, which can guide optical waves of sub-wavelength size, and with relative low propagation loss. In this thesis, several HP waveguides and devices are developed for the purposes of optical communications and sensing. LÄS MER

  4. 9. Multiparty Quantum Communication and fs-laser Written Integrated Optics Circuits

    Detta är en avhandling från Stockholm : Department of Physics, Stockholm University

    Författare :Ashraf Mohamed El Hassan; Stockholms universitet.; [2019]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Quantum optics; quantum communication; quantum cryptography; fs-laser written waveguides; integrated optics circuits; Physics; fysik;

    Sammanfattning : Quantum information science, the rapidly developing interdisciplinary field,  gives power to the information and communications technologies (ICT) by  providing secure communication, precision measurements, ultra-powerful simulation and ultimately computation. It is well known that photons are an ideal candidate for encoding the quantum bit, or "qubit", in quantum information and specially for quantum communication. LÄS MER