| 摘要 |
Disclosed is an optical fibre cable (1) comprised of a centred tension member (3), a cable core (9) including a plurality of loose tubes (7) and a sheath (13, 15). The loose tubes (7) are stranded on the outer periphery of the centred tension member (3) and each loose tube (7) houses at least one optical fibre (5). The sheath (13, 15) is disposed on the outer periphery of the cable core (9) and is comprised of two portions. The first sheath portion (13) includes a part of the sheath is embedded in between the loose tubes (7). The second sheath portion (15) is circumscribed around the cable core (9) to be thereby formed in a pipe shape. The first sheath portion (13) and the second sheath portion (15) are alternately positioned in the longitudinal direction of the cable core (9).
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