An investigation of optical properties in active and passive nanophotonic devices

  • Dun Qiao

    Student thesis: Doctoral Thesis


    This thesis describes the simulation and experiment work of nanostructure design for active and passive nanophotonics devices.

    The active device part focuses on organic light-emitting diodes (OLEDs), widely used new-generation display devices. The attention is concentrated on improving the light extraction of OLED devices, and different nanostructures are proposed based on numerical simulation for addressing the losses driven by surface plasma polariton and guided mode in OLEDs. Particularly, a novel polarized OLED structure based on photo cross-linkable luminescent mesogenic EML material is reported.

    The passive device part introduces the development of a symmetrical dual-sweep source for the Frequency Scanning Interferometry (FSI) system based on Four Wave Mixing (FWM) in Silicon on Insulator (SOI) nano waveguides. Systematic research of non-linear optics in silicon is conducted, which paves the way for numerical simulation and further guides the design of SOI chips. Besides, corresponding fibre-to-chip coupling solutions are also proposed based on numerical simulation. The designed chip is tested experimentally, and the FWM phenomenon is investigated and discussed.
    Date of Award2023
    Original languageEnglish
    SupervisorKang Li (Supervisor) & Nigel Copner (Supervisor)

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