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Optical Switching Technique Sets Ultrafast Bar for Data Communications

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JAKE SALTZMAN, NEWS EDITOR
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Researchers working as part of a multi-institution collaboration led by University of Arizona assistant professor Mohammed Hassan achieved what they said are previously unattainable data transfer speeds from an optical switching mechanism. The researchers exploited the reflectivity modulation of a fused silica dielectric system in a strong light field to demonstrate on/off-type optical switching with attosecond time resolution. At such switching speed, the work charts a course to deploy optical switches and light-based electronics at petahertz speeds, which are orders of magnitude...Read full article

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    Published: April 2023
    Glossary
    optical communications
    The transmission and reception of information by optical devices and sensors.
    optical encoder
    A device designed to measure linear or rotary motion by detection of the movement of markings on a transparent medium past a fixed point of light. The encoder has a moving code plate, a glass disc with positional or angular information -- generally bit information and -- simple geometric optics for readout.
    electro-optics
    1. The branch of physics that deals with the use of electrical energy to create or manipulate light waves, generally by changing the refractive index of a light-propagating material; 2. Collectively, the devices used to affect the intersection of electrical energy and light. Compare with optoelectronics.
    optoelectronics
    Optoelectronics is a branch of electronics that focuses on the study and application of devices and systems that use light and its interactions with different materials. The term "optoelectronics" is a combination of "optics" and "electronics," reflecting the interdisciplinary nature of this field. Optoelectronic devices convert electrical signals into optical signals or vice versa, making them crucial in various technologies. Some key components and applications of optoelectronics include: ...
    semiconductor
    A semiconductor is a type of material that has electrical conductivity between that of a conductor and an insulator. In other words, semiconductors have properties that are intermediate between metals (good conductors of electricity) and insulators (poor conductors of electricity). The conductivity of a semiconductor can be controlled and modified by factors such as temperature, impurities, or an applied electric field. The most common semiconductors are crystalline solids, and they are...
    quantum
    The term quantum refers to the fundamental unit or discrete amount of a physical quantity involved in interactions at the atomic and subatomic scales. It originates from quantum theory, a branch of physics that emerged in the early 20th century to explain phenomena observed on very small scales, where classical physics fails to provide accurate explanations. In the context of quantum theory, several key concepts are associated with the term quantum: Quantum mechanics: This is the branch of...
    light field
    The term light field refers to the spatial distribution of light rays traveling in all directions through a given space. It includes information about the intensity and direction of light rays at every point in a scene. In the context of imaging and photography, the light field is a comprehensive description of the light entering a camera or other optical system. Key points about light field include: Directional information: Unlike traditional photographs that capture only the total light...
    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...
    OpticstelecomdatacomCommunicationsdata communicationsoptical communicationsoptical encoderdata encodingAmericasUniversity of ArizonaUniversity of Arizona College of Optical Scienceselectro-opticsoptoelectronicssemiconductorMoores Lawquantumlight fieldattosecondoptical switchingTechnology News

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