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 20 of 70 for “"Photonic Integrated Circuits"”.
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Volumetric thermo-optical photonic integrated circuits
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01
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On-chip spectrometers with photonic integrated circuits
… CMOS technologies, lithography-based photonic integration platforms offer a cost-effective solution to develop chip-scale spectrometers with mass producibility. To date, numerous on-chip spectrometers have been reported, based on various working principles that fall into four main …
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Photonic integrated circuits for optical logic applications
The optical logic unit cell is the photonic analog to transistor-transistor logic in electronic devices. Active devices such as InP-based semiconductor optical amplifiers (SOA) emitting at 1550 nm are vertically integrated with passive waveguides using the asymmetric twin waveguide technique and …
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Design, microfabrication and characterisation of Photonic Integrated Circuits
… and characterization of state-of-the-art Photonic Integrated Circuits (PICs) for non-linear applications. Silicon PICs is a technology mainly used for application in telecommunications and quantum optics. The strong third order non-linearity of silicon makes it also attractive for …
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Towards optimal capacity-achieving transceivers with photonic integrated circuits
… progress on development of a programmable nanophotonic processor (PNP) for implementing a high-fidelity reconfigurable optical transceiver at the telecommunications wavelength. By encoding information in multiple spatial modes and detecting jointly over the modes using a unitary transform prior …
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Laser micromachining of active and passive photonic integrated circuits
… applications of laser-induced micromachining for photonic circuit fabrication. Two major advantages of laser-induced micromachining are direct patterning and writing on large areas of substrates at high speed following the exposure of laser light, without using complicated photomask steps. For …
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Device-Level Modeling of Photonic Integrated Circuits for Neuromorphic Computing
L'abstract è presente nell'allegato / the abstract is in the attachment
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Surface -Etched Distributed Bragg Reflector Lasers in Photonic Integrated Circuits
A high-power DBR laser array is also presented for use in spectral beam combining systems. The laser structure for this application is engineered for high-power applications. The engineering of the lateral optical guiding structure as well as the surface-etched grating is discussed.
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Material selection and nanofabrication techniques for electronic photonic integrated circuits
Electronic-photonic integrated circuits have the potential to circumvent many of the performance bottlenecks of electronics. To achieve the full benefits of integrating photonics with electronics it is generally believed that wavelength-division multiplexing is needed; requiring an integrated …
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Polarization multiplexed photonic integrated circuits for 100 Gbit/s and beyond
In this thesis, a fully integrated dual-polarization (DP) optical transmitter is proposed, developed and demonstrated. The transmitter proposed in this work consists of two key building blocks: a polarization rotator (PR) and two electro-absorption modulators (EAM), laid out in a serial …
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High-speed silicon electro-optic modulator for electronic photonic integrated circuits
The development of future electronic-photonic 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 …
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Large-scale integration of graphene optoelectronic devices in photonic integrated circuits
… waveguides on the back-end of CMOS ICs for photonic links in access network and computing applications. We describe a simple fabrication process which can accommodate both graphene modulators and photodetectors on almost any waveguide platform. We use this process to fabricate such devices …
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Superconducting nanowire single-photon detectors on aluminum nitride photonic integrated circuits
With recent advances in integrated single-photon sources and quantum memories, onchip integration of high-performance single-photon detectors becomes increasingly important. The superconducting nanowire single-photon detector (SNSPD) is the leading single-photon counting technology for quantum …
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Materials and devices for optical switching and modulation of photonic integrated circuits
The drive towards photonic integrated circuits (PIC) necessitates the development of new devices and materials capable of achieving miniaturization and integration on a CMOS compatible platform. Optical switching: fast modulation and add-drop switches, key components in a PIC, were investigated. A …
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Towards photonic integrated circuits : design and fabrication of passive InP waveguide bends
Waveguide bends, in the (In,Ga)(As,P) material system, have been simulated, fabricated and tested. A process is developed for waveguides of 1 [micro]m through 7[micro]m widths. Waveguides containing S-bends of varying bending radii as well as resonator bends were examined. Inconsistent measurement …
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GeSi photodetectors and electro-absorption modulators for Si electronic-photonic integrated circuits
The silicon electronic-photonic integrated circuit (EPIC) has emerged as a promising technology to break through the interconnect bottlenecks in telecommunications and on-chip interconnects. High performance photonic modulators and photodetectors compatible with Si complimentary metal oxide …
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Programmable Liquid-Crystal-on-Silicon Photonic Integrated Circuits with Millions of Degrees of Freedom
This thesis proposes a novel approach to photonics, wherein waveguides are formed entirely within a homogeneous liquid crystal layer using Liquid-Crystal-on-Silicon (LCoS) technology. Utilizing the electro-optical properties of LCs, we demonstrate the theoretical feasibility of inducing refractive …
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A scalable quantum computation platform : solid state quantum memories coupled to photonic integrated circuits
… immutable - connectivity. Here we demonstrate an integrated platform for solid state quantum information processing. Pre-characterized solid state quantum nodes (nitrogen vacancy centers in diamond nanophotonic structures) are placed into a photonic integrated circuit which allows for low-loss and …
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Metamaterials for High-Efficiency Photonic Integrated Circuits with Multiband Applications in Quantum and Fibre Communications
… branch of electrical engineering now known as photonics. Since then, rapid population growth, the accelerated expansion of communication infrastructure, and the development of novel computing architectures have pushed classical electronics to their fundamental limits. Integrated photonics …
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On-chip Group and Phase Velocity Control for Classical and Quantum Optical Devices
… present group and phase velocity control for the photonic integrated circuits with an emphasis on two-dimensional photonic crystal devices in this thesis. We describe the theory, analytical and numerical designs, and experimental characterization of silicon nanophotonic devices both in classical …
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