High-capacity and low-loss full-dry type optical cable

Abstract

The invention discloses a high-capacity and low-loss full-dry type optical cable. The high-capacity and low-loss full-dry type optical cable is characterized in that various fiber units are arranged around a center reinforcing part, the empty parts among the center reinforcing part and the fiber units are filled with waterproof ropes, then a cable core is formed, and an inner sheath, a metal armor layer and an outer sheath are arranged on the periphery of the cable core from interior to exterior in sequence, wherein each fiber unit is formed in the manner that a plurality of fibers are tightened through high-strength waterproof yarn and laid in a metal loose tube, and the fibers are rear-earth-doped single mode fibers. The high-capacity and low-loss full-dry type optical cable is compact in structure, transmission losses are effectively reduced through the rear-earth-doped single-mode fibers, and the transmission rate is increased; by means of the full-dry type design, the service life of the optical cable is prolonged, the weight of the optical cable is decreased, the performance of the optical cable is stable, the antijamming capability of the optical cable is high, and the optical cable has the wide application field.

Description

technical field [0001] The invention relates to an optical cable, in particular to a large-capacity, low-loss fully dry optical cable, which belongs to the field of communication. Background technique [0002] In the communication system, it is necessary to use optical fiber for long-distance communication. Due to the limitation of the transmission distance of the network cable, for example, the ordinary network cable can only transmit more than 100 meters, and the super-category 5 cable is 200 meters, which greatly restricts the long-distance expansion of the LAN. The optical fiber can transmit hundreds of kilometers, the transmission frequency bandwidth is large, the communication capacity is large, the confidentiality is good, the loss is low, compared with the electromagnetic communication, the interference is small, and many other advantages are increasingly widely used in the field of communication transmission. This is mainly based on The reusability of optical fiber...

AI Technical Summary

Problems solved by technology

Thulium-doped optical fiber has unique properties, and foreign research is relatively mature. Due to the late start of domestic research on thulium-doped optical fiber, the technology is still not mature enough. So far, almost all high-quality thulium-doped optical fibers rely on imports, and their prices are very expensive.

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