Sökning: "UV Bragg gratings"

Visar resultat 1 - 5 av 8 avhandlingar innehållade orden UV Bragg gratings.

  1. 1. Fibre Bragg Gratings : Characterization, Realization and Simulation

    Författare :Ingemar Petermann; Ari Friberg; Sten Helmfrid; Morten Ibsen; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Bragg gratings; optical fibres; optical fibre components; Physics; Fysik;

    Sammanfattning : The main topic of this thesis is realization and characterization of fibre Bragg gratings. A novel versatile grating fabrication technique is developed and a number of gratings are realized, showing the potential of the system. LÄS MER

  3. 2. Technology for photonic components in silica/silicon material structure

    Författare :Lech Wosinski; KTH; []
    Nyckelord :silica-on-silicon technology; PECVD; plasma deposition; photonic integrated circuits; planar waveguide devices; UV Bragg gratings; photosensitivity; arrayed waveguide gratings; multimode interference couplers; add-drop multiplexers;

    Sammanfattning : The main objectives of this thesis were to develop a lowtemperature PECVD process suitable for optoelectronicintegration, and to optimize silica glass composition forUV-induced modifications of a refractive index in PECVDfabricated planar devices. The most important achievement isthe successful development of a low temperature silicadeposition, which for the first time makes it is possible tofabricate good quality low loss integrated components whilekeeping the temperature below 250oC during the entirefabrication process. LÄS MER

  4. 3. Photosensitivity, chemical composition gratings and optical fiber based components

    Författare :Michael Fokine; KTH; []
    Nyckelord :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

  5. 4. Fabrication and Charaterisation of Photonic Integrated Circuits

    Författare :Harendra Fernando; KTH; []
    Nyckelord :Plasma Enhanced Chemical Vapour Deposition PECVD ; Reactive Ion Etching RIE ; Photosensitivity; Bragg-gratings; Optical Add-drop De Multiplexsers;

    Sammanfattning : The past few decades have seen an explosive increase ininformation transfer, fuelled by the enormous growth of theInternet, telecommunication applications, and mass mediasystems in general. Because of the very high bandwidthpotential promised by optical fibre communication technology,the area of all-optical networking has received a great amountof attention. LÄS MER

  7. 5. Laser processing of Silica based glass

    Författare :Patrik Holmberg; Fredrik Laurell; Valerio Pruneri; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fiber Bragg Gratings; photosensitivity; Glass; laser machining; optical fibers; fiber sensor; Physics; Fysik;

    Sammanfattning : The main topic of this thesis work is photosensitivity and photo-structuring of optical fibers and bulk glass. Although research in the field of photosensitivity in glass and optical fibers has been ongoing for more than three decades, the underlying mechanisms are still not well understood. LÄS MER