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Waveguide Design Enables Transmission of Two Types of Light

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JOEL WILLIAMS, ASSOCIATE EDITOR
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Engineers from Vanderbilt University developed a method of simultaneously transmitting two types of optical signals across a single chip. The work may enable a dramatic increases in the volume of data a silicon chip can transmit over any period of time, directly supporting “lab-on-a-chip” capabilities. Engineers design waveguides to work at a single frequency of light, typically 1550 nm, Joshua Caldwell, associate professor in Vanderbilt’s Department of Mechanical Engineering, told Photonics Media. The number of waveguide channels, limited by the amount of space on a...Read full article

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    Published: March 2021
    Glossary
    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...
    lab-on-a-chip
    A lab-on-a-chip (LOC) is a miniaturized device that integrates various laboratory functions and capabilities onto a single, compact chip. Also known as microfluidic devices, lab-on-a-chip systems are designed to perform a variety of tasks traditionally carried out in conventional laboratories, but on a much smaller scale. These devices use microfabrication techniques to create channels, chambers, and other structures that facilitate the manipulation of fluids, samples, and reactions at the...
    multiplexing
    The combination of two or more signals for transmission along a single wire, path or carrier. In most optical communication systems this is referred to as wavelength division multiplexing, in which the combination of different signals for transmission are imbedded in multiple wavelengths over a single optical channel. The optical channel is a fiber optic cable or any other standard optical waveguide.
    infrared
    Infrared (IR) refers to the region of the electromagnetic spectrum with wavelengths longer than those of visible light, but shorter than those of microwaves. The infrared spectrum spans wavelengths roughly between 700 nanometers (nm) and 1 millimeter (mm). It is divided into three main subcategories: Near-infrared (NIR): Wavelengths from approximately 700 nm to 1.4 micrometers (µm). Near-infrared light is often used in telecommunications, as well as in various imaging and sensing...
    Research & TechnologyMaterialsSensors & DetectorsOpticssilicon photonicsWaveguidewaveguideslab-on-a-chipdatamultiplexingoptical processingoptical processorphotonic chiphexagonal boron nitrideboron nitrideinfraredIRnear infraredVanderbilt UniversityJoshua Caldwellmid-infraredMid IRAmericasTech Pulse

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