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Modelling and Characterization of Guiding Micro-structured Devices for Integrated Optics

Armaroli, Andrea (2008) Modelling and Characterization of Guiding Micro-structured Devices for Integrated Optics. PhD Thesis , Università degli studi di Ferrara.

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    In this thesis we show several modelling tools which are used to study nonlinear photonic band-gap structures and microcavities. First of all a nonlinear CMT and BPM were implemented to test the propagation of spatial solitons in a periodic device, composed by an array of parallel straight waveguides. In addition to noteworthy theoretical considerations, active functionalities are possible by exploiting these nonlinear regimes. Another algorithm was developed for the three-dimensional modelling of photonic cavities with cylindrical symmetry, such as microdisks. This method is validated by comparison with FDTD. We also show the opportunity to confine a field in a region of low refractive index lying in the centre of a silicon microdisk. High Q-factor and small mode volumes are achieved. Finally the characterization of microdisks in SOI with Q-factor larger than 50000 is presented

    Item Type:Thesis (PhD Thesis)
    Date:14 March 2008
    Tutor:Trillo Stefano, Benech Pierre
    Additional Information:Tesi in cotutela con Institut National Polytechnique de Grenoble
    Institution:Università degli studi di Ferrara
    Divisions:Dipartimento > Ingegneria
    Subjects:Area 09 - Ingegneria industriale e dell'informazione > ING-INF/02 Campi elettromagnetici
    Uncontrolled Keywords:Silicon-integrated optics, whispering-gallery modes, microdisk resonator, RCWA, beam propagation method (BPM), nonlinear optics in semiconductor waveguides, Kerr effect, spatial solitons
    Deposited on:18 Jan 2013 09:31


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