Flexible optical cable suitable for being used at extreme temperature

Abstract

The invention relates to a flexible optical cable which can be used at the temperature of -150 DEG C to +300 DEG C and has good bending property. The flexible optical cable comprises an outer sheath, The invention relates to a flexible optical cable which can be used at the temperature of -150 DEG C to +300 DEG C and has good bending property. The flexible optical cable comprises an outer sheath,atreme temperature and for being applied in various occasions, such as interior rooms, engine rooms, inner connection of equipment, and the like, requiring specially small bending radii.xtreme temperature and for being applied in various occasions, such as interior rooms, engine rooms, inner connection of equipment, and the like, requiring specially small bending radii. steel wire braid and a flexible metal sleeve which are sequentially sheathed from the outer layer to the inner layer, wherein the flexible metal sleeve is provided with at least one optical fiber, aa steel wire braid and a flexible metal sleeve which are sequentially sheathed from the outer layer to the inner layer, wherein the flexible metal sleeve is provided with at least one optical fiber, and each optical fiber comprises a fiber core as well as a fiber cladding and a polyimide coating which are sequentially coated at the periphery of the fiber core. Since the polyimide coating is adoptend each optical fiber comprises a fiber core as well as a fiber cladding and a polyimide coating which are sequentially coated at the periphery of the fiber core. Since the polyimide coating is adopted as the fiber coating, the optical fiber can be ensured for long-term use at the temperature of -180 DEG C to +300 DEG C; simultaneously, the adopted flexible metal sleeve not only can perform mechand as the fiber coating, the optical fiber can be ensured for long-term use at the temperature of -180 DEG C to +300 DEG C; simultaneously, the adopted flexible metal sleeve not only can perform mechanical protection, in particular to compression resistant protection, but also has good bending property, and the like, therefore, the optical cable is suitable for being laid and used in occasions at eical protection, in particular to compression resistant protection, but also has good bending property, and the like, therefore, the optical cable is suitable for being laid and used in occasions at ex

Description

technical field [0001] The invention relates to a communication optical cable, in particular to an optical cable which can be used in a wide temperature range. Background technique [0002] We know that in many cases it is necessary to lay and use optical cables under extreme temperature conditions (high temperature above 100°C and low temperature below -100°C), such as fire detection, low temperature containers, high temperature pipeline detection, remote control of thermal systems, steam In the monitoring of generators, and in military systems such as aerospace, aviation, and nuclear installations, in these special occasions, the high temperature and low temperature resistance of the applied optical cables are required, otherwise the transmission quality of the optical cables cannot be guaranteed. . However, for existing communication optical cables, the operating temperature of the optical fiber itself is only -50°C to +85°C due to the UV-cured acrylic resin coating of t...

AI Technical Summary

Problems solved by technology

[0004] In addition, because traditional optical cables are usually equipped with tensile elements that enhance rigidity, such as reinforced steel wire or FRP, etc., this will inevitably affect the bending ability of the optical cable, thereby affecting the laying and use of optical cables in various occasions, especially under extreme temperature conditions.

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