Efficient light emission from bismuth-doped rare earths compounds for Si microphotonics
type: CreativeWork
description: For almost 50 years, silicon microelectronics has been the engine of the modern information revolution, owing to the advent of the nanotechnology era that has produced always faster, cheaper, smaller and more performing devices inside the same silicon chip. However its fortune might be coming to an end. Indeed, as a consequence of the continuous reduction in size, much longer electrical interconnects are required, thus leading to an increase of signal delays and to electromagnetic interferences that cause power dissipation and limit the total performances of a chip. A possible solution to this problem can be obtained by replacing the electrical interconnections with the optical ones by the realization of a totally integrated photonic circuit on a silicon platform. For this reason, recently strong efforts have been devoted to the development of the main constituents of a photonic circuit, such as waveguides, splitters or multiplexers, detectors, etc. However there is still a lack of integrated infrared light sources that are required to generate logic value 1-0 and to compensate the optical losses in waveguides. In addition recently also the demand for efficient integrated visible light sources for LEDs, displays and lab-on-chip applications is increasing. Different strategies have been proposed to satisfy these requirements and will be reviewed in the following chapter, by evidencing their strengths and their limits. In order to further increase the efficiency of these light sources and to realize integrated photonic circuits, their coupling with passive devices, such as SOI or plasmonic waveguides and photonic crystals, has been recently proposed owing to the existence of several interesting effects. Two completely different approaches will be pursued in this thesis work: (i) the synthesis of silicon compatible REs compounds in which the REs amount can be varied in a continuous way increasing the efficiency of the light source without suffering from detrimental eff…
abstract: For almost 50 years, silicon microelectronics has been the engine of the modern information revolution, owing to the advent of the nanotechnology era that has produced always faster, cheaper, smaller and more performing devices inside the same silicon chip. However its fortune might be coming to an end. Indeed, as a consequence of the continuous reduction in size, much longer electrical interconnects are required, thus leading to an increase of signal delays and to electromagnetic interferences that cause power dissipation and limit the total performances of a chip. A possible solution to this problem can be obtained by replacing the electrical interconnections with the optical ones by the realization of a totally integrated photonic circuit on a silicon platform. For this reason, recently strong efforts have been devoted to the development of the main constituents of a photonic circuit, such as waveguides, splitters or multiplexers, detectors, etc. However there is still a lack of integrated infrared light sources that are required to generate logic value 1-0 and to compensate the optical losses in waveguides. In addition recently also the demand for efficient integrated visible light sources for LEDs, displays and lab-on-chip applications is increasing. Different strategies have been proposed to satisfy these requirements and will be reviewed in the following chapter, by evidencing their strengths and their limits. In order to further increase the efficiency of these light sources and to realize integrated photonic circuits, their coupling with passive devices, such as SOI or plasmonic waveguides and photonic crystals, has been recently proposed owing to the existence of several interesting effects. Two completely different approaches will be pursued in this thesis work: (i) the synthesis of silicon compatible REs compounds in which the REs amount can be varied in a continuous way increasing the efficiency of the light source without suffering from detrimental eff…
author: SCARANGELLA, ADRIANA
language: eng
keywords: Bismuth, Rare earths compounds, Silicon Microphotonics
date published: 2015-12-09
date modified: 2026-07-24T01:35:06Z
provider: Università degli Studi di Catania
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Università degli studi di Catania

PropertyValue
property ID: Handle
value: https://hdl.handle.net/20.500.11769/582832