Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"silicon waveguide"”.
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Microphotonic silicon waveguide components
… and characterisation of microphotonic silicon waveguide components on silicon-on-insulator (SOI) substrates. The focus is on approximately 10 μm thick and single-moded (SM) silicon rib waveguides. In particular, simulation results are given for straight and bent Si waveguides, …
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Fabrication of optical-mode converters for efficient fiber-to-silicon-waveguide couplers
… an optical fiber is coupled into a large polymer waveguide and then gradually transferred to a smaller silicon waveguide whose width increases with distance along the guide. Several devices were designed and fabricated to measure the efficiency of the coupler. E-beam exposure doses and writing …
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Integrated optical analog-to-digital converter
… single mode fiber to a strongly confining silicon waveguide is proposed. The results of characterization of the filter bank and fiber-to-chip coupler fabricated on the silicon-on-insulator platform are presented and analyzed.
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Second order nonlinearities in silicon photonics
… thesis, second order optical nonlinearities in silicon waveguides are studied. At the beginning, the strained silicon platform is investigated in detail. In recent years, second order nonlinearities have been demonstrated on this platform. However, the origin of these nonlinearities was not …
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High-speed silicon electro-optic modulator for electronic photonic integrated circuits
… integrated circuits (EPIC) based on silicon technology critically depends on the availability of CMOS-compatible high-speed modulators that enable the interaction of electronic and optical signals. This thesis investigates electrically driven Mach-Zehnder modulators based on …
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Theory and design of integrated optical isolators and broadband couplers using Fresnel zone plates
… ridge and deep etched, vertical coupler in a Si waveguide. This optics is placed in order to match the radiating fields to the fiber mode. We use semivectorial simulations with a simple stochastic optimization to design a good integrated optics without cylindrical constrains. Three-dimensional …
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Photonic crystal waveguides for silicon integrated optics
… and theoretical studies on photonic crystal waveguides in the silicon-on-insulator platform. The work presents a new variant of Fabry-Pérot method for waveguide characterization. In this method, the reflectivity at the ends of the waveguide under study is enhanced by lithographically …
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On-chip silicon based photonic structures : photonic band gap and quasi-photonic band gap materials
This thesis focuses on integrated silicon based photonic structures, photonic band gap (PBG) and quasi-photonic band gap (QPX) structures, which are based on high refractive index contrast dielectric layers and CMOS compatibility. We developed a new type of silicon waveguide - Photonic Crystal (PC) …
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Toward accurate and large-scale silicon photonics
Silicon photonics, emerging from the interface of silicon technology and photonic technology, is expected to inherit the incredible integration ability of silicon technology that has boomed the microelectronic industry for half a century, as well as the unparalleled communication capability of …
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Integrated photonics for imaging: novel sources, architectures and applications
… thesis we address the realization of arrays of silicon LEDs (both free space coupled and waveguide coupled) in CMOS photonics processes. We show that such sources can be used to realize compact lensless holographic microscopes, and we leverage CMOS integration to demonstrate a novel reflection …
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Micro-transfer print integration of high-speed photodetectors to SOI platform
… high-speed InGaAs photodetectors with silicon waveguides through various coupling mechanisms. The thesis begins with optimizing the optical power coupled between the waveguide and the photodetector (PD), as even a small gap between them leads to optical mode loss at the interface. A …
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Integrated silicon photonic two-dimensional grating couplers
Silicon (Si) photonics has proven its importance in the recent years for enabling the integration of photonic components, using available complementary metal oxide semiconductor (CMOS) fabrication flows. The simultaneous realization of electronics and photonics in the same manufacturing platform …
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Nonlinear photonics with applications in lightwave communications
… focused on the third order nonlinearity. Silicon is considered to be one of the most attractive materials for photonics integrated circuit technology (PIC) due to its compatibility with complementary metal oxide semiconductor (CMOS). As such, the method has been applied to the SOI platform …