Sökning: "waveguiding"

Visar resultat 1 - 5 av 11 avhandlingar innehållade ordet waveguiding.

  1. 1. Ferroelectric Na0.5K0.5NbO3 as an electro-optic material

    Författare :Mats Blomqvist; KTH; []
    Nyckelord :ferroelectrics; sodium potassium niobates; thin films; rf-magnetron sputtering; waveguiding; refractive index; prism coupling; dielectric tunability;

    Sammanfattning : Ferroelectrics are a group of advanced electronic materialswith a wide variety of properties useful in applications suchas memory devices, resonators and filters, infrared sensors,microelectromechanical systems, and optical waveguides andmodulators. Among the oxide perovskite-structured ferroelectricthin film materials sodium potassium niobate or Na0. LÄS MER

  3. 2. Electro-Optical Na0.5K0.5NbO3 Films

    Författare :Mats Blomqvist; Alexander M. Grishin; Prof. Bruce Wessels; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Functional materials; ferroelectrics; sodium potassium niobates; thin films; rf-magnetron sputtering; waveguiding; refractive index; prism-coupling; electro-optic effects; dielectric tunability; Funktionella material; Functional materials; Funktionella material;

    Sammanfattning : Ferroelectric oxides are a group of advanced electronic materials with a wide variety of properties useful in applications such as memory devices, resonators and filters, infrared sensors, microelectromechanical systems, and optical waveguides and modulators.Among the oxide perovskite-structured ferroelectric thin film materials, sodium potassium niobate or Na0. LÄS MER

  4. 3. Computer Simulations of Photonic Semiconductor Devices

    Författare :Björn Jonsson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; device dynamics; quantum size effects; Schrödinger equation; transfer matrix method; waveguiding properties;

    Sammanfattning : This thesis aims to provide insight into three important aspects of modern computer simulation techniques related to advanced photonic semiconductor devices. These aspects are quantum size effects, waveguiding properties, and device dynamics. LÄS MER

  5. 4. Theoretical studies of microcavities and photonic crystals for lasing and waveguiding applications

    Författare :Aliaksandr Rahachou; Igor Zozoulenko; Min Qiu; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; photonic crystals; microcavities; microlasers; scattering matrix; Green s function; Photonics; Fotonik;

    Sammanfattning : This Licentiate presents the main results of theoretical study of light propagation in photonic structures, namely lasing disk microcavities and photonic crystals. In the first two papers (Paper I and Paper II) we present the developed novel scattering matrix technique dedicated to calculation of resonant states in 2D disk microcavities with the imperfect surface or/and inhomogeneous refractive index. LÄS MER

  7. 5. Wafer-level processing of ultralow-loss Si3N4

    Författare :Marcello Girardi; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; waveguide; photonic integrated circuit; multilayer integration; ultralow loss; microcombs i; silicon nitride;

    Sammanfattning : Photonic integrated circuits (PICs) are devices fabricated on a planar wafer that allow light generation, processing, and detection. Photonic integration brings important advantages for scaling up the complexity and functionality of photonic systems and facilitates their mass deployment in areas where large volumes and compact solutions are needed, e. LÄS MER