The all dielectric field optical cable is a kind of communication cable, which is designed for rapid routing and repeated deployment in the field and complex environment. The large-area aramid fibre reinforced optical cable provides the optical cable with extremely high mechanical strength and compact all-dielectric wiring structure, which enables the optical cable to have extremely high strength-to-weight ratio and facilitate rapid wiring. As the high modulus aramid yarn is adopted as the reinforcing material and special structure design, High strength and full dielectric structure of the cable which greatly improves the strength of optical cable, and meets the requirement of fast wiring. The optical cable characterized as follows: light weight, high tensile strength, strong compressive strength, excellent flexibility, easy bending, oil resistance, wear resistance, flame retardant and the like, and it is suitable for following rapid wiring occasions: harsh conditions of field communication systems, the sensor head of the transformer and the host computer, radar application, and ships, and emergency repair of communication lines.