Self-supporting butterfly optical cable capable of overcoming influence of stripping grooves on protection strength of optical fiber

Abstract

The invention discloses a self-supporting butterfly optical cable capable of overcoming influence of stripping grooves on protection strength of an optical fiber, and overcomes the influence of the stripping grooves of protective sleeves on the protection strength of the optical fiber. The self-supporting butterfly optical cable comprises an upper protective sleeve (1), a lower protective sleeve (4), a loose tube (6) and an optical fiber (7), wherein two pairs of stripping grooves (8) in the shape of a right-angled triangle are arranged symmetrically on both sides of the lower protective sleeve (4); the extension lines of the right-angled edges (801) of the two stripping grooves (8) on the lower end of the lower protective sleeve are set under the cross-sectional area of the loose tube (6); the extension lines of the right-angled edges (803) of the two stripping grooves (8) on the upper end of the lower protective sleeve (4) are set above the cross-sectional area of the loose tube (6),and the notches of the two stripping grooves on the both sides on the lower protective sleeve (4) are provided outside the outer contour lines at both ends of the cross-sectional area of the loose tube. The self-supporting butterfly optical cable provided by the invention has excellent resistance to fracture, reliable work and long service life.

Description

technical field [0001] The invention relates to an optical communication device, in particular to a self-supporting butterfly optical cable. Background technique [0002] At present, the butterfly optical cable has become the most basic network transmission tool. It is named after the shape of a butterfly on the outside of the cross section. The butterfly optical cable is a widely used user access optical cable and is widely used in the fiber-to-the-home FTTH network. The optical cable in the lead-in section is also suitable for users of FTTO and FTTB networks accessed by other optical fibers, and plays its unique role in networks such as intelligent buildings, digital communities, campus networks, and local area networks; the butterfly optical cable has a small outer diameter of optical cable , light weight, low cost, good flexibility and bending performance. In order to improve the mechanical strength of the butterfly cable, there are many technical solutions for the self...

AI Technical Summary

Problems solved by technology

However, looking at the various self-supporting butterfly cables in the prior art, there is a common defect, that is, the opening position of the groove of the protective sleeve is aligned with the position of the optical fiber, and the function of the protective sleeve is to In order to protect the optical fiber, when the external force directly acts on the optical fiber, the protective sleeve plays the role of buffering the external force, and the groove opened on the protective sleeve at the corresponding position of the optical fiber is exactly at the position where the optical fiber needs to be protected. The cushioning ability of the protective sleeve against external force will lead to a sharp decline in the protective ability of the protective sleeve to the optical fiber. The external force will directly act on the optical fiber through the stripping groove of the protective sleeve, which will easily lead to the breakage of the optical fiber.

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