Sökning: "vertical coupling scheme"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden vertical coupling scheme.

  1. 1. Study on electroabsorption modulators and grating couplers for optical interconnects

    Författare :Yongbo Tang; Urban Westergren; Dries Van Thourhout; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Photonic integrated circuit; optical interconnect; transmission line; traveling-wave; electro-absorption modulator; hybrid silicon evanescent platform; grating coupler; vertical coupling scheme; optical antenna; lag effect; polarization beam splitter; Photonics; Fotonik; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Sammanfattning : Decades of efforts have pushed the replacement of electrical interconnects by optical links to the interconnects between computers, racks and circuit boards. It may be expected that optical solutions will further be used for inter-chip and intra-chip interconnects with potential benefits in bandwidth, capacity, delay, power consumption and crosstalk. LÄS MER

  2. 2. Investigation of New Concepts and Solutions for Silicon Nanophotonics

    Författare :Zhechao Wang; Lech Wosinski; Kresten Yvind; KTH; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Planar integrated circuit; silicon photonics; slot waveguide; finite-difference time-domain; waveguide grating coupler; ring resonator; polarization diversity scheme; polarization beam splitter; polarization rotator; hybrid silicon laser; epitaxial lateral overgrowth; chemical-mechanical polishing.; Optics; Optik;

    Sammanfattning : Nowadays, silicon photonics is a widely studied research topic. Its high-index-contrast and compatibility with the complementary metal-oxide-semiconductor technology make it a promising platform for low cost high density integration. LÄS MER

  3. 3. Emittance related topics for fourth generation storage ring light sources

    Författare :Jonas Breunlin; Lunds universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; ultralow emittance; Touschek lifetime; emittance tuning; Beam diagnostics; synchrotron radiation;

    Sammanfattning : In this thesis several aspects related to a new generation of storage ring light sources are discussed. Due to a reduction of electron beam emittance, fourth generation storage rings provide synchrotron radiation sources close to the diffraction limit at X-ray wavelengths. LÄS MER

  4. 4. Fabrication and Characterization of Photonic Crystals, Optical Metamaterials and Plasmonic Devices

    Författare :Jing Wang; Min Qiu; Min Yan; Ping Shum; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Photonic crystals; metamaterials; plasmonics; Photonics; Fotonik; SRA - ICT; SRA - Informations- och kommunikationsteknik;

    Sammanfattning :  Nanophotonics is an emerging research field that deals with interaction between light and matter in a sub-micron length scale. Nanophotonic devices have found an increasing number of applications in many areas including optical communication, microscopy, sensing, and solar energy harvesting especially during the past two decades. LÄS MER

  5. 5. Sequential 3D Integration - Design Methodologies and Circuit Techniques

    Författare :Panagiotis Chaourani; Ana Rusu; Saul Rodriguez; Per-Erik Hellström; Georges Gielen; KTH; []
    Nyckelord :ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sequential 3D integration; monolithic inter-tier vias; design platforms; parasitic extraction flows; RF AMS circuits; inductors; heterogeneous integration; germanium transistors; Informations- och kommunikationsteknik; Information and Communication Technology;

    Sammanfattning : Sequential 3D (S3D) integration has been identified as a potential candidate for area efficient ICs. It entails the sequential processing of tiers of devices, one on top the other. LÄS MER