Chemistry: electrical and wave energy – Apparatus – Coating – forming or etching by sputtering
Patent
1984-09-10
1985-07-23
Morgenstern, Norman
Chemistry: electrical and wave energy
Apparatus
Coating, forming or etching by sputtering
118405, 118733, 118718, 118719, 118 72, 65 312, 204192C, 156345, C23C 1500
Patent
active
045307504
ABSTRACT:
Vitreous optical fibers are useful in an expanding number of technologies. A process, corresponding apparatus, and a hermetically sealed fiber of the above nature are disclosed wherein high energy ionized plasmas are used in a continuous production of a coated vitreous optical fiber. Drawn fibers are axially aligned by ambient gases discharging through high vacuum gas locks. These fibers are then continuously fed through a high energy plasma zone so that the surface of the drawn fiber is subjected to ionized bombardment. This provides plasma-milling of the fiber surface for improving the fiber strength and for superior bonding of subsequently applied coatings.
In preferred practice, a vacuum zone is used to deposit, from a plasma ion source, a diamond-like elemental carbon film onto the moving fiber. Another plasma vacuum zone may be used to deposit, over the carbon film, a very thin film of a conductive elemental metal illustratively; tin, indium and aluminum. To increase the thickness of the previously deposited metallized coating or film, the moving, pre-coated fiber is immersed in and passed through a more condensed molecular form of the metal used in the previous coating process. A molten liquid and/or vapor phase of the metal may be used in this latter process, although the former is preferred.
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Aisenberg Sol
Stein Martin L.
A. S. Laboratories, Inc.
Morgenstern Norman
Plantz Bernard F.
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