| 摘要 |
<p>OPTICAL FIBRE CABLE Optical fibre cable with optical fibres received in recesses of a crush resistant central core, the recesses formed by longitudinally extending ribs lying at an angle to the core axis, and a protective sheath surrounding the core, an inner layer of the sheath comprising metal and being carried upon the ribs. The metal layer may be corrugated circumferentially and coated with polymeric material. An outer layer of the sheath is an impermeable polymeric material. The ribs preferably extend along the core at an angle to its axis.</p> |
