Optical transmission media and methods of making same
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United States of America Patent
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Oct 16, 1990
Grant Date -
N/A
app pub date -
May 15, 1989
filing date -
May 15, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical fiber transmission medium (30) ) includes optical fiber (21) provided with a coating system (31) typically including two layers each of a different coating material. An inner layer (32) of a first coating material is called the primary coating and an outer layer is termed the secondary. In order to achieve desired performance characteristics, performance is related to properties of a coating system. The coating materials have well defined moduli and the second coating material has an elongation which is substantially less than in prior secondary coating materials. Adhesion levels which are optimized rather than maximized are substantially stable with respect to time. Curing of the coating materials may be accomplished simultaneously or in tandem with the application separately of the coating materials.
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