Abstract
Chemical vapor deposition techniques for the production of low loss optical waveguides with pure fused silica cores and borosilicate cladding have previously been shown to be capable of producing fibers with very low loss.1,2 These techniques are based on a method used by MacChesney et al.3 in which metal chloride vapors are reacted with oxygen Inside of a fused quartz tube at very high temperatures. In this paper, we report refinements of these techniques which result in well controlled and reproducible index gradients, and we report the achievement of very low loss single mode fibers.
© 1975 Optical Society of America
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