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    Effect Of Temperature on The Absorption Loss Of Chalcogenide Glass Fibers

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    Downloads: 619
    Date
    1999
    Author
    Nguyen, V. Q.
    Sanghera, J. S.
    Kung, F. H.
    Aggarwal, I. D.
    Lloyd, I. K.
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    Abstract
    The change in the absorption loss of IR-transmitting chalcogenide glass fibers in the temperature range? of -90 degrees C less than or equal to T less than or equal to 70 degrees C was investigated. For sulfur-based glass fibers the change in loss relative to room temperature was slightly affected by the temperature in the wavelength region of 1-5 mu m. For lambda greater than or equal to 6 mu m the change in loss was mainly due to multiphonon absorption. The change in loss for tellurium-based glass fibers increased significantly at T = 60 degrees C. The increase in the loss at short wavelengths (lambda less than or equal to 4.1 mu m) was due to electronic excitations in the tail states. Between 5 and 9 mu m there was noticeable free-carrier absorption. Beyond lambda greater than or equal to 9 mu m, multiphonon absorption dominated the loss spectrum. (C) 1999 Optical Society of America.
    URI
    http://hdl.handle.net/10919/46893
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    • Faculty Works, Bradley Department of Electrical and Computer Engineering [479]

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