Hughes Aircarft Company

Sidney H Goodman

A protective layer or film applied to the metal surface of metal-clad optical fibers or metal-clad glass capillaries protects the metal surface during storage and provides a suitable fluxing surface. The protective layer or film comprises a mixture of a dicarboxylic acid fluxing agent and a chosen protective material which is unreactive with the dicarboxylic acid and which forms a film with the dicarboxylic acid that alters at a chosen soldering temperature to release the dicarboxylic acid. Prior to soldering, the chosen protective material maintains the metallic layer in an oxide-free state and the protective layer protects the metallic layer from external contamination to thereby enhance the solderability of the metallic surface when exposed to the soldering temperature at which the fluxing agent is released.

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Calabasas, CA, United States of America

Sidney H Goodman