1975•Unpublished venueRequires access
GRADED INDEX CLAD FUSED SILICA CORE FIBER OPTICAL WAVEGUIDES
P. W. Dabby, Douglas A. Pinnow, I. Camlibel
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Abstract
Recently, methods of making low loss fused silica core
borosilicate(1-3) clad fibers have been reported. One of these
processes(3) has been to deposit a layer of borosilica onto the
surface of a solid silica core rod by a flame reaction of boron and
silicon hydrides with oxygen. The deposit is subsequently heat treated to
form a bubble free glass cladding. The preform is then drawn into a fiber
that has a step refractive index profile. Such fibers are useful, but they
have a limited bandwidth when compared with fibers that have properly
graded refractive index profiles. By a relatively minor modification to
the above process, fibers with a partially graded index profile have now
been made having a loss of 9db'km at 0.8μ wavelength.