Low-Bending-Loss and Low-Splice-Loss Single-Mode Fibers Employing a Trench Index Profile(Optical Fibers, Cables and Fiber Devices, <Joint Special Section>Recent Progress in Optoelectronics and Communications)

概要

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A single-mode fiber employing a trench index profile for indoor wiring is proposed to realize low-bending loss and low-splice loss simultaneously. The designs and the advantages of the fiber over fibers with conventional step index profiles are described. The characteristics of manufactured fibers with trench index profiles are also described. One of the manufactured fibers realizes a bending loss of 0.018 dB/turn at 1550nm for a bending radius of 7.5mm. and a splice loss of 0.19dB at 1550nm in mechanical splicing to a conventional single mode fiber simultaneously. Other one of the fibers realizes a bending loss of 0.011dB/turn at 1550nm for a bending radius of 5mm, and the splice loss is 0.37dB at 1550nm simultaneously. A total loss of a fiber employing the trench index is small and stable against the fluctuation of MFD.
社団法人電子情報通信学会の論文
2005-05-01