Abstract

1.5-μm band dispersion-shifted fibers of conventional single-core type may be used at a relatively small V-value region compared with segmented-core types.1,2 Therefore, key techniques for manufacturing the low-loss fiber cable include accommodation to severe bending conditions as well as a fine control of the zero-dispersion wavelength. We have concentrated our attention on making low-loss fibers having a GeO2/SiO2 core with a steplike index profile including a convex one3 and F-doped cladding. This paper describes the excellent properties of a cable manufactured with dispersion-shifted single-core-type fibers.

© 1986 Optical Society of America

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