Abstract
Operation of optical communication systems for telephone trunk lines at 1.3-μm wavelength utilizes the <1-dB/km attenuation performance obtained at that wavelength in optical fibers manufactured by vapor deposition techniques. However, systems with bit rates of >90 Mbit/sec and repeater spans of 15-30 km, which utilize multimode graded-index fibers, may thee be bandwidth limited. Therefore, much effort has been focused on improving band- width performance of such fibers. Bandwidths of 1.8-3.4 GHz km have recently been reported in fibers fabricated by the VAD process.’ Fibers with bandwidths of ~3 GHz km have been reported using the OVD process.2 This paper presents inside vapor deposition (IVD) process bandwidth results for ~250 km of 0.20-N.A. 50-μm core/125-μm diam fibers coated with a composite UV-cured acrylate material to 250 μm in diameter. The fibers were produced under manufacturing conditions at Corning's Wilmington, N.C. plant.
© 1982 Optical Society of America
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