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Furukawa Review No.29

Separable Optical Fiber Ribbons and Cables for Advanced Mid-span Branching

Tatsuya Oyama, Ken Kanai, Hitoshi Kaneda, Masaru Nakajima, Toshiaki Ozawa, Yoshihisa Rintsu and Yuichi Watanabe


With the growing popularity of fiber-to-the-home (FTTH), installation work of optical fiber cables to each household is increasing in number. But in the mid-span branching of conventional aerial cables, improvement of low efficiency in fiber utilization has posed a problem to be solved. Accordingly, the authors have developed, with the aim of improving the fiber utilization efficiency in mid-span branching, both two-fiber and eight-fiber ribbons that enable ease of separating into specified number of fibers at the point of mid-span branching. This paper reports on the characteristics of the optical fiber ribbon of separable type and the optical cable based on the ribbon, along with a special tool for mid-span branching work that has been developed together.

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