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Light isolated on photonic chips for next-gen computing

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Ashley N. Paddock, [email protected]

A new technique that isolates light onto a photonic chip could pave the way for faster computers and reduced data loss when connected to the global fiber optic network. California Institute of Technology scientists have designed an optical waveguide – an 0.8-µm-wide silicon device – that allows light to travel in one direction but that changes the mode of the light when it travels in the opposite direction; i.e., light traveling through the waveguide moves in a symmetric mode in one direction, then changes into an asymmetric mode in the other. The two beams pass through...Read full article

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    Published: October 2011
    Glossary
    optical isolator
    Also known as an optical diode, an optical isolator is a device that utilizes the Faraday effect to suppress or redirect backscattered or backreflected light in order to allow light transmission in one direction only. Optical isolators are commonly found in laser cavities.
    waveguide
    A waveguide is a physical structure or device that is designed to confine and guide electromagnetic waves, such as radio waves, microwaves, or light waves. It is commonly used in communication systems, radar systems, and other applications where the controlled transmission of electromagnetic waves is crucial. The basic function of a waveguide is to provide a path for the propagation of electromagnetic waves while minimizing the loss of energy. Waveguides come in various shapes and sizes, and...
    AmericasCaliforniaCalifornia Institute of TechnologyCaltechConsumerfiber opticsintegrated circuitslight isolation on photonic chipsnext-generation computingoptical isolatoroptical wiresOpticsphotonic chipsphotonic circuitsResearch & Technologysilicon chipTech PulseWaveguide

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