Optical transistor | EPFL Graph Search

Êtes-vous un étudiant de l'EPFL à la recherche d'un projet de semestre?

Travaillez avec nous sur des projets en science des données et en visualisation, et déployez votre projet sous forme d'application sur GraphSearch.

Découvrez-en plus sur les applications Graph.

An optical transistor, also known as an optical switch or a light valve, is a device that switches or amplifies optical signals. Light occurring on an optical transistor's input changes the intensity of light emitted from the transistor's output while output power is supplied by an additional optical source. Since the input signal intensity may be weaker than that of the source, an optical transistor amplifies the optical signal. The device is the optical analog of the electronic transistor that forms the basis of modern electronic devices. Optical transistors provide a means to control light using only light and has applications in optical computing and fiber-optic communication networks. Such technology has the potential to exceed the speed of electronics, while conserving more power. The fastest demonstrated all-optical switching signal is 900 attoseconds (attosecond =10^-18 second), which paves the way to develop ultrafast optical transistors. Since photons inherently do not interact with each other, an optical transistor must employ an operating medium to mediate interactions. This is done without converting optical to electronic signals as an intermediate step. Implementations using a variety of operating mediums have been proposed and experimentally demonstrated. However, their ability to compete with modern electronics is currently limited. Optical transistors could be used to improve the performance of fiber-optic communication networks. Although fiber-optic cables are used to transfer data, tasks such as signal routing are done electronically. This requires optical-electronic-optical conversion, which form bottlenecks. In principle, all-optical digital signal processing and routing is achievable using optical transistors arranged into photonic integrated circuits. The same devices could be used to create new types of optical amplifiers to compensate for signal attenuation along transmission lines. A more elaborate application of optical transistors is the development of an optical digital computer in which signals are photonic (i.

À propos de ce résultat

Cette page est générée automatiquement et peut contenir des informations qui ne sont pas correctes, complètes, à jour ou pertinentes par rapport à votre recherche. Il en va de même pour toutes les autres pages de ce site. Veillez à vérifier les informations auprès des sources officielles de l'EPFL.

Publications associées (1)

Concepts associés (11)

Cours associés (9)

Séances de cours associées (29)

MICRO-410: Transducers for classical and quantum applications

This course gives an introduction to transducers by both considering fundamental principles and their application in classical and quantum systems. The course builds up on the fundamental concept of c

MICRO-608: Optical Computing

In this course we will start with a brief history of optical computing, describe methods for implementing optical interconnection and logic and then spend most of our time on learning about the recent

BIO-443: Fundamentals of biophotonics

This module serves as an introduction to the area of biophotonics. The approach is multidisciplinary .The course is mainly knowledge-based but students will benefit from the skills learned by carrying

Silicon photonics

Silicon photonics is the study and application of photonic systems which use silicon as an optical medium. The silicon is usually patterned with sub-micrometre precision, into microphotonic components. These operate in the infrared, most commonly at the 1.55 micrometre wavelength used by most fiber optic telecommunication systems. The silicon typically lies on top of a layer of silica in what (by analogy with a similar construction in microelectronics) is known as silicon on insulator (SOI).

Optical transistor

Ordinateur optique

Un ordinateur optique (ou ordinateur photonique) est un ordinateur numérique qui utilise des photons pour le traitement des informations, alors que les ordinateurs conventionnels utilisent des électrons. Les photons ont la particularité de ne pas créer d’interférence magnétique, de ne pas générer de chaleur et de se propager très rapidement. Les transistors optiques sont beaucoup plus rapides que les transistors électroniques. Des ordinateurs optiques pourraient être plus puissants que les ordinateurs conventionnels actuels.

Cristaux photoniques: Structure de bande et couplage optomécanique

Explore la structure de la bande photonique, les intervalles de bande et le couplage optomécanique dans les cavités cristallines photoniques.

Solitons et propagation non linéaire EE-440: Photonic systems and technology

Explore les solitons, la propagation non linéaire et leur impact sur les systèmes de communication optiques.

Lasers semi-conducteurs ultrarapides

Explore le projet MIXL, en soulignant l'importance des lasers à semi-conducteurs ultrarapides pour observer la dynamique rapide et permettre une communication rapide en nanotechnologie.

Guided-wave micro-electro-mechanical systems (MEMS) optical switches for telecommunication applications

Roland Guerre

The present thesis deals with Micro-Electro-Mechanical Systems (MEMS) optical switches for telecommunication applications. The aim is to study new type of microsystems for guided-wave optical switchin

EPFL2005