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CASTECH INC - New Building the Bridge of Light

Multitasking fibers weave a new story for imaging systems

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Lynn Savage, [email protected]

Imagine walking to work one day and, for no obvious reason, you get a feeling that everyone is looking at you. You ignore the feeling for a while, but it persists, despite the fact that none of the people bustling around nearby are casting a single glance at you and you’ve gotten used to the growing number of surveillance cameras filling every city block. Now you feel silly, perhaps even a little paranoid. But you might not be wrong – a new imaging technology has begun to weave itself into the fabric of everyday life. In the lab of professor Yoel Fink of the materials science and...Read full article

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    Published: September 2009
    Glossary
    angle of incidence
    The angle formed between a ray of light striking a surface and the normal to that surface at the point of incidence.
    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...
    optical fiber
    Optical fiber is a thin, flexible, transparent strand or filament made of glass or plastic used for transmitting light signals over long distances with minimal loss of signal quality. It serves as a medium for conveying information in the form of light pulses, typically in the realm of telecommunications, networking, and data transmission. The core of an optical fiber is the central region through which light travels. It is surrounded by a cladding layer that has a lower refractive index than...
    photocurrent
    The current that flows through a photosensitive device, such as a photodiode, as the result of exposure to radiant power.
    remote sensing
    Remote sensing is a method of data collection and observation where information about objects, areas, or phenomena on Earth's surface is gathered from a distance, typically using sensors onboard satellites, aircraft, drones, or other platforms. This technique enables the monitoring and analysis of Earth's surface and atmosphere without direct physical contact. Remote sensing systems capture electromagnetic radiation (such as visible light, infrared, microwave, or radio waves) reflected or...
    ultraviolet
    That invisible region of the spectrum just beyond the violet end of the visible region. Wavelengths range from 1 to 400 nm.
    visible
    That term pertaining to the spectral region that can be perceived by the eye.
    wavelength
    Electromagnetic energy is transmitted in the form of a sinusoidal wave. The wavelength is the physical distance covered by one cycle of this wave; it is inversely proportional to frequency.
    angle of incidencecamerasFabien Sorinfiber opticsFinkflexibleImagingindustrialindustrial controlinfraredintelligent fabricIRlenslessLight SourcesLynn M. Savagemedical imagingMITmultimaterial fibersoptical fiberphotocurrentpolyethersulfonepreformsremote sensingResearch & TechnologyRGBSavagesemiconductingSorinTech PulseultravioletUVvisiblewavelengthYoel Fink

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