Search for dissertations about: "integrated optical devices"

Showing result 1 - 5 of 89 swedish dissertations containing the words integrated optical devices.

  2. 1. Spectral Management in Quasi-Phase-Matched Parametric Devices

    Author : Mikael Tiihonen; Fredrik Laurell; Jean-Jaques Zondy; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; optical parametric devices; nonlinear optics; ultraviolet generation; mid-infrared generation; optical parametric oscillator; optical parametric generator; optical parametric amplifier; Optical physics; Optisk fysik;

    Abstract : Nonlinear optical interaction in quasi-phase-matched structures opens up unique possibilities to build compact and efficient parametric devices such as optical parametric oscillators, generators, and amplifiers with tailored spectral properties. The focus of this thesis is on novel parametric interactions with periodically-poled KTiOPO4 (PPKTP) as the parametric gain medium. READ MORE

  4. 2. Optical modelling of conjugated polymers : from materials to devices

    Author : Nils-Krister Persson; Andy Monkman; Linköpings universitet; []
    Keywords : Spectroscopic ellipsomctry; optical modelling; organic solar cell; conjugated polymer; polyfluorene; polythiophene; copolymer; fullerene blend; photovoltaic device; dielectric function; NATURAL SCIENCES; NATURVETENSKAP;

    Abstract : Measurements and modelling of theoretical properties of polymer-based photovoltaic devices, PPVDs, are the subjects of this thesis. Modelling refers both to modelling of materials, based on extraction of the dielectric function, and to modelling of devices by computer simulation of the optical electrical field inside PPVDs. READ MORE

  5. 3. Polymer Components for Photonic Integrated Circuits

    Author : Aleksandrs Marinins; Sergei Popov; Leif Katsuo Oxenlowe; KTH; []
    Keywords : integrated photonics; polymers; optical communications; microfabrication; optical waveguides; microring resonators; silicon; Si nanocrystals; photoluminescence; Fysik; Physics;

    Abstract : Optical polymers are a subject of research and industry implementation for many decades. Optical polymers are inexpensive, easy to process and flexible enough to meet a broad range of application-specific requirements. These advantages allow a development of cost-efficient polymer photonic integrated circuits for on-chip optical communications. READ MORE

  6. 4. Silicon-based Photonic Devices : Design, Fabrication and Characterization

    Author : Ziyang Zhang; Min Qiu; Thomas Koch; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Photonic Devices; Silicon Photonics; Parallel Computation; Nanofabrication; Electron Beam Lithography; Optical Characterisation; Optics; Optik;

    Abstract : The field of Information and Communication Technologies is witnessing a development speed unprecedented in history. Moore’s law proves that the processor speed and memory size are roughly doubling each 18 months, which is expected to continue in the next decade. READ MORE

  7. 5. Integrated Nanophotonic Devices in Lithium Niobate

    Author : Mohammad Amin Baghban; Katia Gallo; Fabrice Raineri; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Lithium niobate LN ; LN-on-insulator; photonic integrated circuits; nonlinear optics; electro-optics; waveguides; propagation losses; Bragg gratings; grating couplers; polarization-insensitive; LN for life sciences; Fysik; Physics;

    Abstract : Lithium niobate (LN) is a ferroelectric crystal offering a broad transparency spectrum, together with excellent electro-optic and nonlinear optical properties. Thanks to them, LN is setting the standard for quantum optics and telecommunications in critical applications such as ultrafast modulation and frequency conversion. READ MORE