Dynamic fatigue of metallized fiber optics

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Abstract
A plating process was developed to deposit Ni-P, nickel and gold on an optical glass fiber. The tensile strength of the metallized pigtail increases when the oxidation time, or the electrolytic Ni or Au layer thickness increases, or when the electroless Ni layer thickness decreases. A pull force of more than 1,000 g is routinely obtained on soldered metallized optical fibers. Optical fibers retain their hermeticity after plating and soldering. Soldered metallized optical fibers have a lifetime expectancy over 20 years even when submitted to continuous stresses above 100 MPa.

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