Silicon-based Photonic Crystal Waveguides and Couplers

Silicon-based Photonic Crystal Waveguides and Couplers

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In this thesis, we seek to further develop a technology that has the potential to facilitate the forging of silicon photonics and photonic integrated circuits: photonic crystals on silicon-on-insulator substrates. We will first present a brief overview of photonic crystals and their physical properties. We will then detail a finely-tuned procedure for fabricating two-dimensional photonic crystal in the silicon-on-insulator material system. We will then examine transmission properties of our fabricated devices including propagation loss, group index dispersion, and coupling efficiency of directional couplers. Finally, we will present a description of a system for adiabatically tapering optical fibers and the results of using tapered fibers for efficiently coupling light into photonic crystal devices.Another method for coupling to photonic crystal waveguides that has been demonstrated is prism coupling [28]. Prism coupling requires alignment of complicated free-space optics to focus an out-of-plane beam on a prism placed on top of theanbsp;...

Title:Silicon-based Photonic Crystal Waveguides and Couplers
Author:Stephen G. Farrell
Publisher:ProQuest - 2008


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