Near field communication optical cable

Abstract

The invention provides a near field communication optical cable comprising a plurality of multimode optical fibers and a loose tube made of a high modulus polyester material and arranged on the outside of the multimode optical fibers in a sleeving manner. The gaps among the multimode optical fibers inside the loose tube are filled with fiber paste. The outer side of the loose tube is tightly arranged with a ring of single fine round sheathed steel wires parallel to the multimode optical fibers. The outside of the single fine round sheathed steel wires is coated with a ring of water blocking wrapping tape. The gaps among the single fine round sheathed steel wires between the water blocking wrapping tape and the loose tube are filled with water blocking cable paste. The outside of the water blocking wrapping tape is coated with a layer of steel-plastic composite strip, and then a polyethylene sheath is used for cabling. Through the ring of single fine round sheathed steel wires parallel to the multimode optical fibers and arranged inside the optical fiber, the hardness of the cable is improved, the normal use of the cable will not be affected and the transmission efficiency of an optical path is improved. At the same time, through the multi-ring water blocking wrapping tape, the waterproof performance of cable is ensured.

Description

technical field [0001] The invention belongs to the field of communication, and in particular relates to a short-distance communication cable. Background technique [0002] Fiber optics are the next generation transmission medium and have some distinct advantages over copper media. Because the optical fiber does not radiate electronic signals to the outside world, the network using the optical fiber medium has greatly improved in terms of security, reliability and network performance. The bandwidth of optical fiber transmission greatly exceeds that of copper cables, and the maximum connection distance supported by optical fiber is more than two kilometers. It is an inevitable choice to build a large-scale network. There are now two different types of fiber, single-mode fiber and multimode fiber. (The so-called "mode" refers to a beam of light entering the fiber at a certain angle). Multimode fiber uses light-emitting diodes (LEDs) as light emitting devices, while single-...

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Problems solved by technology

[0003] However, in the cable transmission installation, the cables are often knotted and entangled due to insufficient cable hardness, especially in the same office building or in a relatively close area, where there are a large number of optical cables, which greatly affects the cable installation. Use, affect optical path transmission

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