Optical fiber field connector

Abstract

The invention relates to an optical fiber field connector. A dismountable sleeve bin is sleeved outside a main body; the main body and the dismountable sleeve bin are provided with standard type interfaces; the main body is in a hollow structure; an optical fiber core insert is arranged at the front end of the main body; a preset optical fiber is arranged in the optical fiber core insert; a tail sleeve is arranged at the back end of the optical fiber core insert; a mechanical joint consisting of a substrate, a splint and a lantern ring is arranged in the main body; the front end of the mechanical joint is abutted with the optical fiber core insert, and the back end of the mechanical joint is connected with the tail sleeve through a guiding device and a damping device; a second optical fiber is arranged in the tail sleeve; and an outer protecting sleeve adopts a rotary screw thread structure to clamp the tail sleeve to prevent the second optical fiber from falling off and sliding. In the optical fiber field connector of the invention, the second tail end of the preset optical fiber is connected with the second optical fiber, a connection protecting box is not needed, storage protection for a bare optical fiber is unnecessary, when the optical fiber field connector is assembled, a special tool and grinding are not needed, whether the connection is successful can be detected at the field, and after installation, the field connector can be repeatedly opened for use.

Description

technical field [0001] The invention relates to a connector in an optical fiber transmission system, in particular to an optical fiber field connector, especially an optical fiber field connector suitable for on-site installation and an installation component thereof. Background technique [0002] Optical fiber has been widely used in various application scenarios in the telecommunications industry. The nearly unlimited bandwidth potential of optical fiber makes it an ideal medium for comprehensively carrying various services, gradually replacing the previous coaxial cable. With the large-scale application of FTTH (fiber-to-the-home), it is inevitable that a large number of optical fiber docking scenarios will appear. Compared with copper cables, fiber optic cable materials are very cheap, but if you use traditional methods to connect optical fibers, the cost is much higher than the cost of copper cable connections. For example, high-cost active fusion splicing equipment i...

AI Technical Summary

Problems solved by technology

[0005] 1) Equipment is expensive

Because the fusion splicer is a complex and high-precision equipment, it is expensive

[0006] 2) Higher requirements on the environment

Since the welding machine is relatively heavy and is also a precision equipment, it must be placed on a firm and vibration-free platform, so it cannot adapt to the construction in a narrow space such as a hoistway.

[0007] 3) poor applicability

The eccentricity, eccentricity, material, melting point, etc. of the optical fiber are all required when the fusion splicer is fused. The difference in the variety and quality of the optical fiber will reduce the success rate of fusion

[0008] 4) The requirements for the operator are high, and the welding time is long

The requirements for the operation of the fusion splicing machine are very strict, and the operators must be trained in the early stage, and the operation time of the fusion splicing is relatively long

[0009] 5) Cannot be reused

If the fusion splice fails, the optical fiber in the splice section can only be cut off, and the heat-melt protection sleeve is scrapped at the same time, which increases the cost of materials and construction time

[0010] 6) The ability to protect the optical fiber is poor

[0015] 1) Generally, it is formed at one time and basically cannot be reused

[0016] 2) It is impossible to visually observe the butt joint quality of the optical fiber

[0017] 3) There is no tail-end fiber locking device, so that in engineering construction and scheduling, external traction will cause a gap at the joint surface of the two optical fibers, resulting in a serious decline in connection quality

[0018] 4) The ability to protect the optical fiber is poor, and it cannot withstand large axial and lateral tension and pressure. When the external force exceeds a certain range, it is prone to large attenuation or even fiber breakage.

The end face of the fiber core of the unpolished connector may be extremely rough or the end face of the fiber cannot be seen. When coupled with other connectors, the performance is unstable, and the following problems will occur:

[0027] 1) It is impossible to ensure that the vertex offset is within the specified range, which will cause the optical fiber to not be in full contact and affect the reliability of optical transmission

[0028] 2) It is impossible to guarantee that the optical fiber unevenness is within the specified range

[0030] 4) In the unembedded optical fiber connector, the field optical fiber is loose in the ceramic ferrule, which will affect the horizontal or vertical displacement of the optical fiber when fixing the optical fiber cable at the end. Instability etc.

[0031] 5) Even if some optical performance tests pass the initial inspection, the stability and repeatability are poor, and the environmental test and repeated plug-in test cannot be passed, and the initial installation success rate is low

[0034] 1) The structure is complex, the internal components of the connector have high precision and high cost

[0035] 2) The clamping force of some optical fiber connectors on the preset optical fiber and the second optical fiber comes from the deformation of the elastic body. During repeated use, the clamping force is weakened due to the fatigue characteristics of the material, and as time changes, the elastic body The clamping force on the fiber will vary unevenly

[0036] 3) Some optical fiber connectors have no observation window, so it is impossible to visually observe the butt joint quality of the optical fiber

[0037] 4) The clamping force of the outer cladding of the second optical fiber is not enough to withstand large axial and lateral tensile forces

[0038] 5) The installation of connectors requires special platforms or fixtures. On the one hand, it increases the cost of installed components. On the other hand, it requires high technical requirements for operators, and the initial training time is long

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