Optical fibre cable utilizing thermotropic liquid crystal polyme

Details Optical fibre cable utilizing thermotropic liquid crystal polyme Optical fibre cable utilizing thermotropic liquid crystal polyme

1987-04-20

1988-10-18

Sikes, William L.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

350 9630, 350 9633, 350 9634, 350320, 427163, 427356, 428 1, 428364, 428395, G02B 644, B05D 506, C09K 1900

Patent

active

047782447

ABSTRACT:
Optical fibre cables are produced containing an extruded support member of thermotropic liquid crystalline polymer in which the extrusion conditions are used to control the thermal expansion coefficient of the support member. The support member may be extruded on to the support member. In this case extrusion conditions may be used to induce a compressive strain on the fibre which can counteract the thermal change in length of the fibre when subject to temperature variations so that a cable having temperature variation can be produced. Support members which provide a loose fitting sleeve over the fibre can be produced by control of extrusion conditions to have a thermal expansion coefficient of not less than -5.times.10.sup.-6 /.degree.K.

REFERENCES:
patent: 4161470 (1979-07-01), Calundann
patent: 4410683 (1983-10-01), Gale
patent: 4553815 (1985-11-01), Martin
patent: 4645297 (1987-02-01), Yoshihara et al.
patent: 4705353 (1987-11-01), Wagoner
Katsuyama et al., "Transmission Loss of Coated Single-Mode Fiber at Low Temperatures" Applied Optics vol. 19, No. 24, 12/80, pp. 4200-4205.
Lagakos et al., "Minimizing Temperature Sensitivity of Optical Fibers" Applied Optics, vol. 20, No. 19, 10/81, pp. 3276-3278.

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