| 摘要 |
PCT No. PCT/SE85/00265 Sec. 371 Date Mar. 5, 1986 Sec. 102(e) Date Mar. 5, 1986 PCT Filed Jun. 27, 1985 PCT Pub. No. WO86/00988 PCT Pub. Date Feb. 13, 1986.A fibre-optic cable responsive to microbending and forming part of a device for measuring pressure in accordance with the principle of creating a periodic mechanical disturbance in the fibre. The cable comprises a fibre (F) having a core (C) and a core-sheathing (M). An elongated element in the form of a twisted filament (T1, T2) or a twisted band (B) extends along the fibre, and a primary shield (H) encases the fibre and the twisted element such that the twisted element contacts the sheathing at periodically spaced separate regions. |
