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All-Optical Switching Demonstrated in a Silicon 3-D Photonic Crystal

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Refractive index is modulated by optically exciting free carriers.

Breck Hitz

Optical switching — in which one beam of light modulates, or switches, another — is one of the holy grails of modern photonics. It’s a necessary technology for optical computing and for “transparent” optical networks, where optical information is transferred from one location to another without conversion to electronic form. Different approaches to optical switching have been pursued in many laboratories around the world, but, recently, researchers at the Institute for Atomic and Molecular Physics in Amsterdam, the Netherlands, and at the University of Minnesota in Minneapolis,...Read full article

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    Published: November 2007
    Glossary
    optical switching
    Optical switching refers to the process of controlling the routing or transmission of optical signals within a network using various techniques to selectively switch or redirect optical paths. This is essential in optical communication systems, where data is transmitted as light signals over optical fibers. Optical switching technologies enable efficient, high-speed, and flexible routing of optical signals, enhancing the performance and scalability of optical networks. There are several types...
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    Basic Sciencelight modulatesoptical computingoptical switchingphotonicsResearch & Technology

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