Water-blocking optical fiber and optical cable using the optical fiber

Abstract

The invention belongs to the technical field of wires and cables, and particularly relates to a waterproof optical fiber. The waterproof optical fiber comprises a core in the center, a lapping layer outside the core, and an internal coating layer outside the lapping layer. The waterproof optical fiber is characterized in that a first waterproof layer covers the coating layer, a damp-proof layer covers the first waterproof layer, a second waterproof layer covers the damp-proof layer, an external coating layer covers the second waterproof layer, and a color layer covers the external coating layer. The invention further discloses an optical cable utilizing the optical fibers. The waterproof optical fiber has good effect and high tension resistance; the optical cable utilizing the optical fibers is convenient to produce, low in cost and much popular with producers, proofers and users.

Description

technical field [0001] The invention belongs to the technical field of cables, in particular to a water-blocking optical fiber and an optical cable using the optical fiber. Background technique [0002] As the main carrier of communication, the use of optical fiber is increasing day by day; at present, optical fiber is mainly used in the field of signal transmission, such as mobile phone signals, TV signals, control signals, monitoring signals, etc., and the commonly used optical fibers are silica-based optical fibers. The main light-transmitting part is the core. The core diameter is usually about 9 μm. The core diameter of multimode fiber is usually 50 μm and 62.5 μm. There is also a cladding outside the core, and a coating outside the cladding. Because the core diameter of the optical fiber is relatively thin, and there are a lot of hydrogen ions and hydroxide ions in the air or water, it is easy to combine with silica, causing the core to break or the fiber to break, aff...

AI Technical Summary

Problems solved by technology

However, this method, on the one hand, requires a large amount of ointment. The use of ointment has caused environmental pollution and a great waste of resources, resulting in high costs; what's more, the optical fiber is usually placed in a loose tube In the middle, the loose tube is filled with fiber paste, and then the outer loose tube is also filled with water-blocking ointment to further isolate moisture

Caused the increase of cost, moreover, ointment environment is unfriendly, difficult to remove when using, therefore, all brought great inconvenience to manufacturer and user

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