Sökning: "microwave optical filtering"

Hittade 4 avhandlingar innehållade orden microwave optical filtering.

  1. 1. Fibre Bragg Grating Components for Filtering, Switching and Lasing

    Detta är en avhandling från Stockholm : KTH

    Författare :Zhangwei Yu; KTH.; [2008]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fibre Bragg grating; photosensitivity; apodization; chirp; phase-shift; microwave optical filtering; TECHNOLOGY Electrical engineering; electronics and photonics; TEKNIKVETENSKAP Elektroteknik; elektronik och fotonik;

    Sammanfattning : Fibre Bragg gratings (FBGs) are key components for a vast number of applications in optical communication systems, microwave photonics systems, and optical sensors, etc. The main topic of this thesis is fibre Bragg grating fabrication and applications in direct microwave optical filtering, high speed switching and switchable dual-wavelength fibre lasers. LÄS MER

  2. 2. Millimeter-Wave Photonics: Signal Sources and Transmission Links

    Detta är en avhandling från Chalmers University of Technology

    Författare :Andreas Wiberg; Chalmers tekniska högskola.; Chalmers University of Technology.; [2005]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Fotonik; Photonics; microwave photonics; millimeter-wave photonics; millimeter-waves; mm-wave generation; photonic frequency multiplication; millimeter-wave communication system; radio over fiber;

    Sammanfattning : With the use of higher and higher frequencies in a number of current and future wireless millimeter-wave applications it is beneficial to use photonics for several reasons. The use of optical fibers is an advantageous way to transport millimeter-waves in terms of loss, mechanical flexibility, weight, and insensitivity to electromagnetic interference. LÄS MER

  3. 3. Applications of monolithic fiber interferometers and actively controlled fibers

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

    Författare :Patrik Rugeland; KTH.; [2013]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Fiber; fiber Bragg grating; micro-structured fiber; add drop multiplexer; fiber interferometer; microwave photonics; temperature sensor;

    Sammanfattning : The objective of this thesis was to develop applications of monolithic fiber devices and actively controlled fibers. A special twin-core fiber known as a ‘Gemini’ fiber was used to construct equal arm-length fiber interferometers, impervious to temperature and mechanical perturbations. LÄS MER

  4. 4. Navigation and Mapping for Aerial Vehicles Based on Inertial and Imaging Sensors

    Detta är en avhandling från Linköping : Linköping University Electronic Press

    Författare :Zoran Sjanic; Linköpings universitet.; Linköpings universitet.; [2013]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Small and medium sized Unmanned Aerial Vehicles (UAV) are today used in military missions, and will in the future find many new application areas such as surveillance for exploration and security. To enable all these foreseen applications, the UAV's have to be cheap and of low weight, which restrict the sensors that can be used for navigation and surveillance. LÄS MER