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New Optical Modulator Could Make Communications 100 Times Faster

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ATLANTA, Jan. 4, 2006 -- By using electromagnetic waves instead of electrical current for switching, researchers have operated an optical modulator at terahertz frequencies -– an accomplishment that could one day facilitate data transmission rates in the trillions of bits per second. The work, by researchers from the Georgia Institute of Technology, the University of California, Santa Barbara (UCSB) and NASA's Ames Research Center (Ames), represents a key step toward a new generation of optical communication systems that would be as much as 100 times faster than current technology, bringing...Read full article

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    Published: January 2006
    Glossary
    modulator
    A modulator is a device or component that modifies a carrier signal in order to encode information for transmission over a communication channel. The process of modulating involves varying one or more properties of the carrier signal, such as its amplitude, frequency, or phase, to represent the information being sent. Modulation is a fundamental technique in communication systems for encoding analog or digital data onto a carrier wave. There are several types of modulators, each with its own...
    optical
    Pertaining to optics and the phenomena of light.
    optical communications
    The transmission and reception of information by optical devices and sensors.
    terahertz
    Terahertz (THz) refers to a unit of frequency in the electromagnetic spectrum, denoting waves with frequencies between 0.1 and 10 terahertz. One terahertz is equivalent to one trillion hertz, or cycles per second. The terahertz frequency range falls between the microwave and infrared regions of the electromagnetic spectrum. Key points about terahertz include: Frequency range: The terahertz range spans from approximately 0.1 terahertz (100 gigahertz) to 10 terahertz. This corresponds to...
    Basic ScienceCommunicationselectromagneticfibersfree-electronGeorgia TechmodulatorNews & Featuresopticaloptical communicationsterahertzUCSBLasers

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