Ultra-long optical fiber unit and its manufacturing method

Abstract

The ultra-long optical fiber unit and the manufacturing method thereof of the present invention relate to the core part and key technology of producing large-length submarine cables, and the ultra-long optical fiber unit is used for marine information transmission. Including stainless steel tubes, special optical fibers for full-chromatographic submarine cables, and high-viscosity hydrogen-evolution fiber paste; stainless steel belts are used, formed and welded and armored into stainless steel tubes, and special optical fibers for full-chromatography submarine cables are introduced into the stainless steel tubes, which are fully filled with high-viscosity hydrogen-evolution fiber paste. (1) Carry out full chromatogram looping and coloring on the screened optical fiber to make a special optical fiber for full chromatogram submarine cable; (2) Adopt multi-head active pay-off; (3) Slitting and welding stainless steel strip; (4) Use a The fiber guide needle is introduced into the full-chromatographic submarine cable special optical fiber and high-viscosity hydrogen-evolution fiber paste at the same time; (5) The welded stainless steel tube is cold-drawn and deformed by the mold; (6) Tension is applied to the stainless steel tube; (7) The drawn-formed The stainless steel optical fiber unit is sent to the wire take-up frame by the tractor, and is collected on the 1800mm reel wound with steel pipe to make an ultra-long optical fiber unit.

Description

Technical field [0001] The ultra-long optical fiber unit and the manufacturing method thereof of the present invention relate to the core part and key technology of producing long-length submarine cables. The ultra-long optical fiber unit of the present invention can be applied to fast, stable, large-capacity and safe information transmission between oceans, offshore platforms, land islands and islands. Background technique [0002] In recent years, with the continuous development of the marine economy, maritime communication exchange has been continuously strengthened. In the past, traditional optical cables, microwaves, and satellite communications have been unable to meet information transmission due to their small capacity, slow speed, and poor anti-interference ability. In the past, the length of optical cable reel was usually only a few kilometers, and the optical fiber unit used for submarine cable was only 10-20km. There were many medium and indirect continuations, result...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the continuous development of the marine economy, maritime communication exchanges have been continuously strengthened. In the past, traditional optical cables, microwaves, and satellite communications have been unable to meet the needs of information transmission due to their small capacity, slow speed, and poor anti-interference ability.

In the past, the length of the optical cable reel is usually only a few kilometers, and the optical fiber unit used for the submarine cable is only 10-20km. There are many intermediate connections, resulting in large power loss, unstable signals, many faults, high cost, complicated construction, and difficult maintenance. hinder information exchange and restrict economic development

At present, more than 50km is an ultra-long optical fiber unit, and no other company can produce it

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