Spectral and spatial characterization of perfluorinated graded-index polymer optical fibers for the distribution of optical wireless communication cells

In this paper, the characterization of a perfluorinated graded-index polymer optical fiber (PF-GIPOF) for a high-bitrate indoor optical wireless system is reported. PF-GIPOF is used here to interconnect different optical wireless access points that distribute optical free-space high-bitrate wireless communication cells. The PF-GIPOF channel is first studied in terms of transmission attenuation and frequency response and, in a second step, the spatial power profile distribution at the fiber output is analyzed. Both characterizations are performed under varying restricted mode launch conditions, enabling us to assess the transmission channel performance subject to potential connectorization errors within an environment where the end users may intervene by themselves on the home network infrastructure.This work has been partially supported by the Collège Doctoral International/Université Européenne de Bretagne (CDI/UEB) and “Conseil Régional de Bretagne” and by the Spanish Ministry of Economía y Competitividad under the grant TEC2012-37983- C03-02.Publicad

Evaluation des technologies optiques pour les réseaux domestiques à très haut débit

Over the last ten years, the number of laptop computers, personal digital assistants (PDAs) and other mobile terminals has massively increased. This evolution has led to a huge demand of wireless communications, in the purpose of avoiding wires and connectors to supply mobility in various places such as offices, homes, rail stations or airports. To date, this mobility is mainly offered by radiofrequency (RF) communications using Wi-Fi channels, with a maximum bitrate of 300 Mbps. However, new indoor applications such as non-compressed high-definition (HD) video transfer or remote hard-disk backup require much higher bandwidths (> 2Gbps). Such a bitrate can be transmitted using an optical wireless communications OWC system. In this thesis, a new architecture of OWC has been proposed and studied according to the GROWTH criteria (GReen Optical Wireless InTo Home network). This architecture is based on distributed free-space optical pico-cells in each room of the home interconnected by optical fibers and offering bitrates that exceed 1 Gbps. The work is divided into four parts: dimensioning of the systems and the selection of associated opto-electronics technologies, simulation of the hybrid optical channel (fiber optics + free-space) using the VPI Transmission Maker and Matlab softwares, choice of the wavelength and finally the experimental measurements to validate the performance of the system.Pendant la dernière décennie, le nombre des ordinateurs portables, assistants personnel numérique et autres terminaux mobiles a massivement augmenté. Cela a conduit à une énorme demande de communications sans fil pour offrir la mobilité dans différents endroits tels que les bureaux de travail, les gares ferroviaires ou les aéroports. A ce jour, cette mobilité est principalement offerte par les communications radiofréquences tel que le WiFi, ayant un débit maximal de 300 Mbit/s. Cependant, des nouvelles applications telles que le transfert des vidéos HD non-compressées ou le sauvegarde des disques durs à distance nécessitent une bande passante plus importante (> 2 Gbit/s). Ce débit peut être transmis en utilisant les communications optiques sans fil. Dans cette thèse, une nouvelle architecture de transmissions optiques sans fil est proposée et étudiée selon le critère GROWTH (GReen Optical Wireless InTo Home network). Cette architecture est basée sur la distribution des pico-cellules optiques en espace libre dans les différentes pièces de la maison par l¿intermédiaire d¿une interconnexion fibrée offrant un débit dépassant le Gbit/s. Ce travail est divisé en quatre parties : le dimensionnement du système et la sélection des technologies optoélectroniques associées, la simulation su canal optique hybride (fibre optique + espace libre) en utilisant les logiciel VPI Transmission Maker et Matlab, le choix de la longueur d¿onde et finalement, les mesures expérimentales pour valider la performance du système

Caractérisations temporelle et spatiale de la fibre PF-GIPOF pour les réseaux domestiques à très haut débit

National audienc

Fibre-fed multipoint indoor optical wireless system

International audienceThis paper presents an Indoor Optical Wireless (IOW) distribution system using a 1.55 μm infrared communication channel. The idea is to provide indoor free-space dynamic optical coverage cells at very high rates through an optical fibre network using a dedicated architecture. We simulate the overall link to show that an implementation with "almost" commercially available components may lead to 2.5 Gbit/s operational optical wireless links

Indoor distributed optical wireless Gbps link dimensioning

International audienceThe dimensioning of indoor distributed optical wireless Gbps links is reported, respecting the eye-safety rules and involving standard optoelectronic components. The links performance are defined and estimated as a function of geometrical and signal parameters

Fiber-distributed Indoor High Bitrate Optical Wireless System

International audienceIn this paper, we describe a wideband Indoor Optical Wireless distribution system based on an infrared communication channel using a dedicated distribution architecture. The idea is to provide narrow line-of-sight indoor free-space optical cells at very high rates through an optical fiber network. The wavelength used is 1,550 nm for eye safety and optical power budget reasons. To validate the system performance using standard On-Off Keying modulation, we calculate the power budget and simulate the overall link, showing that an implementation with commercially available components can lead to 2.5 Gbps operational optical wireless links

Fibre-fed multipoint indoor optical wireless system

International audienceThis paper presents an Indoor Optical Wireless (IOW) distribution system using a 1.55 μm infrared communication channel. The idea is to provide indoor free-space dynamic optical coverage cells at very high rates through an optical fibre network using a dedicated architecture. We simulate the overall link to show that an implementation with "almost" commercially available components may lead to 2.5 Gbit/s operational optical wireless links

1X4 Optical Switch Based on Digital Actuator

International audienceIn this article, an optical fiber switch based on a digital actuator is presented. Four discrete positions are obtained through a magnetic holding of a Mobile Permanent Magnet (MPM) placed in a fixed square cavity. The MPM can switch, thanks to Lorentz's force, between the four corners of the cavity. A 1X4 optical fiber switch is obtained by fixing a prismatic mirror on the top side of the MPM and an N × N switch array can be obtained using a matrix of this unit. After a presentation of the actuator principle, the optical switch is detailed and characterized for telecommunication purpose

Evaluation of optical technologies for home networking at very high-speed

Pendant la dernière décennie, le nombre des ordinateurs portables, assistants personnel numérique et autres terminaux mobiles a massivement augmenté. Cela a conduit à une énorme demande de communications sans fil pour offrir la mobilité dans différents endroits tels que les bureaux de travail, les gares ferroviaires ou les aéroports. A ce jour, cette mobilité est principalement offerte par les communications radiofréquences tel que le WiFi, ayant un débit maximal de 300 Mbit/s. Cependant, des nouvelles applications telles que le transfert des vidéos HD non-compressées ou le sauvegarde des disques durs à distance nécessitent une bande passante plus importante (> 2 Gbit/s). Ce débit peut être transmis en utilisant les communications optiques sans fil. Dans cette thèse, une nouvelle architecture de transmissions optiques sans fil est proposée et étudiée selon le critère GROWTH (GReen Optical Wireless InTo Home network). Cette architecture est basée sur la distribution des pico-cellules optiques en espace libre dans les différentes pièces de la maison par l¿intermédiaire d¿une interconnexion fibrée offrant un débit dépassant le Gbit/s. Ce travail est divisé en quatre parties : le dimensionnement du système et la sélection des technologies optoélectroniques associées, la simulation su canal optique hybride (fibre optique + espace libre) en utilisant les logiciel VPI Transmission Maker et Matlab, le choix de la longueur d¿onde et finalement, les mesures expérimentales pour valider la performance du système.Over the last ten years, the number of laptop computers, personal digital assistants (PDAs) and other mobile terminals has massively increased. This evolution has led to a huge demand of wireless communications, in the purpose of avoiding wires and connectors to supply mobility in various places such as offices, homes, rail stations or airports. To date, this mobility is mainly offered by radiofrequency (RF) communications using Wi-Fi channels, with a maximum bitrate of 300 Mbps. However, new indoor applications such as non-compressed high-definition (HD) video transfer or remote hard-disk backup require much higher bandwidths (> 2Gbps). Such a bitrate can be transmitted using an optical wireless communications OWC system. In this thesis, a new architecture of OWC has been proposed and studied according to the GROWTH criteria (GReen Optical Wireless InTo Home network). This architecture is based on distributed free-space optical pico-cells in each room of the home interconnected by optical fibers and offering bitrates that exceed 1 Gbps. The work is divided into four parts: dimensioning of the systems and the selection of associated opto-electronics technologies, simulation of the hybrid optical channel (fiber optics + free-space) using the VPI Transmission Maker and Matlab softwares, choice of the wavelength and finally the experimental measurements to validate the performance of the systemCESSON SEVIGNE-Télécom Breta (350512301) / SudocSudocFranceF

Optical Localization and Tracking Method of a Mobile Micro-Conveyor Over a Smart Surface

International audienc