Certified to B2ca CPR and FE180 fire-resistance standards, these cables maintain optical integrity under extreme heat and flame exposure—ideal for tunnels, hospitals, airports, industrial plants, data centers, and railway networks. The first UL flame-listed optical cable designed for both indoor and outdoor use in critical communication and emergency systems that must remain operational during a fire. This innovative cable features a patented design that ensures functionality for over three hours in temperatures reaching. In this paper, a kind of flame retardant and fire-resistant optical cable is prepared with ceramic sheathing materials. Its structure is mainly composed of cable core, longitudinal covering a layer of two-sided synthetic mica tape outside cable core, inner sheath packed with ceramic sheathing. Our fire resistant/fire survival cables feature a steel wire/steel wire braiding/corrugated steel tape armour to provide mechanical strength. Offered in OM1, OM3 and OM4 multimode and OS2 singlemode, in 4, 8, 12 or 24 core fibre configurations.
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