Optical fiber cable with high mechanical strength

Abstract

The utility model relates to the technical field of communication, in particular to an optical fiber cable with high mechanical strength, which comprises an outer sheath and a core body, and the outer sheath is coated outside the core body. The core body comprises a fiber core and a wrapping layer, the wrapping layer is wrapped outside the fiber core, the wrapping layer is plated with aluminum and inlaid with nickel wire shell materials, and a coating layer is sleeved outside the wrapping layer. The optical fiber cable with high mechanical strength solves the problem of low tensile strength of the optical fiber in optical fiber communication.

Description

TECHNICAL FIELD

[0001] The utility model relates to communication technical field especially a high mechanical strength's optical fiber cable. BACKGROUND

[0002] With the rapid development of global information highway, LAN digital cable has been further applied on a large scale, and the rapid growth of network technology and the leap development of access network technology have put forward higher requirements for information transmission media. Communication cable is a cable for transmitting telephone, telegraph, fax document, television and radio program, data and other electric signals, and has the advantages of large communication capacity, high transmission stability, good secrecy, less influence by natural conditions and external interference, etc. The advantages of modern optical fiber communication are as follows: large transmission bandwidth and communication capacity, low transmission loss, long relay distance, thin wire diameter and light weight, raw material is quartz, saves metal material, is beneficial to resource rational use, strong insulation and electromagnetic interference resistance, strong corrosion resistance and radiation resistance, good winding property, no electric spark, small leakage, strong secrecy, etc. It can be used in special environment or military. However, the tensile strength of optical fiber is low: the tensile strength of optical fiber is relatively low, and it is easy to be damaged by external force, which also increases the maintenance difficulty and cost of optical fiber communication system. SUMMARY

[0003] In order to solve the above problems, the utility model provides a kind of high mechanical strength's optical fiber cable, solves the problem of low tensile strength of optical fiber in optical fiber communication.

[0004] In order to realize the above purpose, the technical scheme adopted by the utility model is as follows:

[0005] A kind of high mechanical strength's optical fiber cable, including outer sheath and core body, the outer sheath is covered in the core body outer;

[0006] The core body includes fiber core and cladding, the cladding is covered outside the fiber core, the cladding is plated with aluminum nickel silk shell material, and the cladding is provided with a coating layer.

[0007] Further, the fiber core is nanoscale silicon dioxide material.

[0008] Further, the diameter of the fiber core is 3-55 μm, and the outer diameter of the coating layer is 130-145 μm.

[0009] Further, the outer sheath is PET material.

[0010] Further, aramid yarn is arranged between the coating layer and the outer sheath, and the inner wall and the outer wall of the aramid yarn are connected with the coating layer and the outer sheath respectively.

[0011] The utility model has the advantages of:

[0012] The core adopts nanoscale silica material, compared with coarse crystal SiO2, the performance indexes of the utility model are greatly improved, the cladding adopts plated aluminum nickel wire shell material, can fundamentally solve the problem of low tensile strength of optical fiber in optical fiber communication, at the same time, the cladding is low relative refractive index material, can improve the relative refractive index of core-cladding, thereby improve the efficiency of optical fiber communication information transmission, also improve the tensile strength of optical fiber, so as to reduce the cost and difficulty of optical fiber communication system maintenance. Under the action of the coating layer, the core surface can be protected from humid gas and external scratches, the optical fiber is endowed with improved microbending performance and reduced microbending additional loss. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structure diagram of the high mechanical strength optical fiber cable of the preferred embodiment of the utility model.

[0014] In the figure, 1 is an outer sheath, 2 is a core, 21 is a core, 22 is a cladding, 23 is a coating layer, and 3 is aramid yarn. DETAILED DESCRIPTION

[0015] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0016] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. When an element is referred to as being "disposed on" another element, it can be directly disposed on the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0017] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0018] Please participate Figure 1The utility model discloses a high mechanical strength's optical fiber cable of a preferred implementation mode, including outer sheath 1 and core 2.

[0019] The outer sheath 1 is coated on the core 2, and the outer sheath 1 is made of PET material, so that the optical fiber communication system is more convenient to connect, and the problem of connection difficulty of the traditional optical fiber communication is solved.

[0020] The core 2 comprises a fiber core 21 and a cladding 22, and the cladding 22 is coated on the fiber core 21; the cladding 22 is made of an aluminum-plated nickel filament shell material, and the cladding 22 is provided with a coating layer 23.

[0021] The numerical aperture of the optical fiber is related to the fiber core refractive index and the fiber core-cladding relative refractive index difference. Physically, the numerical aperture of the optical fiber represents the ability of the optical fiber to receive incident light. The larger the NA, the stronger the ability of the optical fiber to receive light. From the point of view of increasing the optical power entering the optical fiber, the larger the NA is better, because the larger numerical aperture of the optical fiber is beneficial to the butt joint of the optical fiber.

[0022] Therefore, the fiber core 21 of the embodiment is made of nanoscale silica material. In the embodiment, nanoscale SiO2 is used instead of traditional materials. The nanoscale silica has small particle size, large specific surface area, good biocompatibility, and the advantages of surface interface effect, small size effect, quantum size effect and the like. The use of nanoscale silica material to replace the traditional fiber core and replace coarse crystal SiO2 can greatly improve the performance indicators of the product.

[0023] Meanwhile, the use of the aluminum-plated nickel filament shell material for the cladding 22 can make the cladding 22 more firm and have low relative refractive index, improve the relative refractive index of the fiber core-cladding, and thus improve the efficiency of optical fiber communication information transmission, and also improve the tensile strength of the optical fiber, thereby reducing the cost and difficulty of maintenance of the optical fiber communication system.

[0024] In the embodiment, the diameter of the fiber core 21 is 3-55 μm, and the outer diameter of the coating layer 23 is 130-145 μm, which can improve the efficiency of optical fiber communication.

[0025] Since the bending radius of the optical fiber cannot be too small, otherwise the loss of optical signal will increase, which also limits the application of the optical fiber communication system in some special occasions. Therefore, the coating layer 23 of the embodiment can protect the surface of the optical fiber from moisture and external scratches, improve the microbending resistance of the optical fiber, and reduce the microbending additional loss of the optical fiber. The coating layer 23 can protect the optical fiber from water vapor erosion and mechanical damage, thereby prolonging the service life and stability of the optical fiber.

[0026] In this embodiment, aramid yarn 3 is arranged between coating layer 23 and outer sheath 1, and the inner wall and the outer wall of aramid yarn 3 are connected with coating layer 23 and outer sheath 1 respectively. Aramid yarn 3 of this embodiment can enhance the tensile strength of the optical cable, reduce the weight, improve the flexibility and provide good insulation performance.

Claims

1. A high mechanical strength optical fiber cable characterized by, It comprises an outer sheath (1) and a core (2), the outer sheath (1) is coated outside the core (2); The core (2) comprises a fiber core (21) and a cladding (22), the fiber core (21) is nanoscale silica material; the cladding (22) is coated outside the fiber core (21), the cladding (22) is plated with aluminum-nickel-silk shell material, and the cladding (22) is provided with a coating layer (23); The aramid yarn (3) is arranged between the coating layer (23) and the outer sheath (1), and the inner wall and the outer wall of the aramid yarn (3) are connected with the coating layer (23) and the outer sheath (1) respectively.

2. A high mechanical strength fiber optic cable according to claim 1, characterized in that: The diameter of the fiber core (21) is 3-55 μm, and the outer diameter of the coating layer (23) is 130-145 μm.

3. A high mechanical strength fiber optic cable according to claim 1, characterized in that: The outer sheath (1) is PET material.

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