4 research outputs found

    Stimulated Brillouin Scattering in Integrated Circuits: Platforms and Applications

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    Coherent interactions between light and sound have been of significant interest since the invention of the laser. Stimulated Brillouin scattering (SBS) is a type of coherent interaction where light is scattered from optically generated acoustic waves. SBS is a powerful tool for optical and microwave signal processing, with applications ranging from telecommunications and Radar, to spatial sensing and microscopy. Over the last decade there has been increasing interest in the investigation of Brillouin scattering at device scales smaller than the wavelength of light. New interactions with the waveguide boundaries in these systems are capable of altering the strength of SBS, from complete suppression to orders of magnitude increases. The landmark demonstration of Brillouin scattering in planar waveguides, just six years ago, represents a new frontier for this field. This work explores the effective generation and harnessing of stimulated Brillouin scattering within modern photonic circuits. After establishing the foundations of linear and nonlinear optical circuits, we investigate the Brillouin processes available in multimode waveguides. We experimentally demonstrate giant Brillouin amplification using spiral waveguides consisting of soft-glass materials. We then integrate this soft-glass onto the standard platform for photonic circuits, silicon on insulator, without any reduction in performance. We apply these advanced devices to the field of microwave photonics and create high suppression microwave filters with functionality far beyond traditional electronic circuits. This thesis is a significant step towards Brillouin enabled integrated photonic processors

    Sistema de comunicaciones tierra-tierra mediante anillo de fibra 贸ptica entre emplazamientos de navegaci贸n a茅rea

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    El proyecto que se expondr谩 a continuaci贸n trata de dar soluci贸n a los requisitos especificados por el cliente principal, basados en el dise帽o e instalaci贸n de un sistema de comunicaciones mediante fibra 贸ptica entre los distintos emplazamientos de navegaci贸n a茅rea existentes dentro de un aeropuerto. Dentro de un complejo aeroportuario existen distintos emplazamientos que albergan ayudas para navegaci贸n a茅rea, y es imprescindible la comunicaci贸n entre todos. Dentro de ellos se encuentra la Torre de Control desde donde se controlan y gestionan todas las operaciones de las aeronaves. Tambi茅n forman parte los diferentes emplazamientos que dan soporte al aterrizaje, despegue y navegaci贸n. Se realizar谩 una revisi贸n de todas las tecnolog铆as de comunicaciones existentes, como son las basadas en multiplexaci贸n de la frecuencia, tiempo y longitud de onda. Tambi茅n los protocolos de comunicaciones como pueden ser SNMP (Protocolo Simple de Gesti贸n de Red), TCP (Protocolo de Control de Transporte), IP (Protocolo de Internet) y Ethernet. Para dar soluci贸n al presente proyecto, se utilizar谩 SDH (Jerarqu铆a Digital S铆ncrona) como principal tecnolog铆a. Sobre SDH se pueden destacar mejoras en la velocidad de transmisi贸n, mayor fiabilidad con mec谩nicos autom谩ticos de protecci贸n ante fallos y gran capacidad de ampliaci贸n en el futuro. El dise帽o y ejecuci贸n del proyecto se llevar谩 a cabo cumpliendo unas directrices comunes, que responden a unos est谩ndares de gesti贸n de proyectos, mediante herramientas como el diagrama de tiempos de ejecuci贸n del proyecto, normativas de seguridad, informes de seguimiento, etc. Por 煤ltimo, se obtendr谩n las conclusiones finales t茅cnicas de cara a la mejora en futuros proyectos que se realicen en similares condiciones.This project is a solution to the specified requirements by the primary client, based on the design and installation of a fiber optic communication between different air navigation sites in an airport. Inside an airport there are many sites that have air navigation aids and the communication is essential between them. The Control Tower is the principal site where you can control and manage all aircraft operations. Also includes various sites that support the landing, takeoff and navigation. A revision of the existing communication technologies will be provided, such as those based on frequency, time and wavelength division multiplexing. Also the communications protocols such as SNMP (Simple Network Management Protocol), TCP (Transport Control Protocol), IP (Internet Protocol) and Ethernet. To solve this project, SDH (Synchronous Digital Hierarchy) has been used as the main technology in this project. Regarding SDH, it can be highlighted improvements in transmission speed, higher reliability with automatic mechanical failure protection and highly scalable in the future. Design and implementation will be carried out in compliance with standard guidelines, which meet standards of project management, using tools such as the timing diagram, safety regulations, monitoring reports, etc. Finally, technical conclusions for the enhancement in future project carried out in similar conditions, will be obtained.Ingenier铆a T茅cnica en Sistemas de Telecomunicaci贸

    Optical Networks for Future Internet Design

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