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25 February 1993 High-temperature sputtered coatings for optical fiber
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We have developed a magnetron sputter coating method to continuously coat silica optical fibers with a dual layer coating of Inconel 625 alloy and platinum. The coating process is performed on-line as the fiber is drawn to minimize the rapid strength degradation of the silica due to attack by moisture in the air. Because of the modular design of the sputter equipment, the process is well suited for the deposition of a wide variety of metals and is readily adapted for scale-up. Multimode optical fibers were produced with coatings up to 0.5 microns in thickness consisting of an adhesion layer of Inconel and an outer layer of platinum. The coatings are adherent and remain mechanically intact after thermal cycling between room temperature and 2000 degree(s)F in vacuum. Approximate tensile strengths of 145 to 290 Kpse have been measured. These attributes make this sputter coated fiber a promising candidate for use in high temperature environments.
© (1993) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Harvey N. Rogers "High-temperature sputtered coatings for optical fiber", Proc. SPIE 1791, Optical Materials Reliability and Testing: Benign and Adverse Environments, (25 February 1993);


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