Glass fiber hermetic seals using a CO₂ laser

Abstract

Glass fibers of approximately 0.13-mm diam have been hermetically sealed through windows of Corning Code 7740 glass and Code 7052 glass, and into B₂O₃·3SiO₂ glass as well. The seals were made with a 50-W CO₂ laser at a power level of about 5 W. Transmission loss tests show a transit loss of <0.2 dB for a B₂O₃·3SiO₂ clad fused silica fiber through a Corning Code 7740 glass window.

© 1975 Optical Society of America

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