CN210803786U - Non-contact type lossless optical fiber jumper wire - Google Patents

Abstract

The utility model relates to the field of communication technology, specifically disclose a non-contact can't harm optic fibre wire jumper, including ceramic lock pin, adapter metal casing, ceramic sleeve, adapter section lock pin, optic fibre, the inside pre-buried optic fibre of ceramic lock pin and adapter section lock pin, the one end butt joint of ceramic lock pin and adapter section lock pin, the outside cover of ceramic lock pin and adapter section lock pin butt joint department is equipped with ceramic sleeve, ceramic sleeve arranges adapter metal casing in, its characterized in that: and the end face of the ceramic ferrule is provided with an annular groove along the periphery of the optical fiber. The utility model has the advantages that realized wire jumper and wire jumper, the non-contact between the fiber end face is aimed at in wire jumper and the adapter, has avoided the butt joint damage of fiber end face.

Description

Non-contact type lossless optical fiber jumper wire

Technical Field

The utility model relates to the field of communication technology, especially a non-contact can't harm optic fibre wire jumper.

Background

The existing optical fiber communication technology is widely applied to various fields, and along with the improvement of transmission rate and distance, the requirements of optical fiber communication quality and optical fiber end face quality are higher and higher. The optical fiber butt joint is different from the original cable butt joint, the cable only needs to be in good contact, and the butt joint of the end faces of the optical fibers needs to be strictly controlled in the aspects of up-down, left-right, front-back, inclination angle and the like so as to meet the requirement of good insertion loss. The size of the part of the optical fiber which is really used for light transmission is small, the part is basically in the micrometer level, the butt joint operation is inconvenient, and in practical use, a large-size precise outer sleeve such as a ceramic ring, stainless steel and the like is usually required to be additionally arranged on the optical fiber so as to be convenient for assembling and butt joint.

In order to meet the requirement of butt joint precision, the existing butt joint mode of the optical fiber end faces adopts pairwise butt joint of the same optical fiber end faces, and positioning and fixing are carried out through an external compact ceramic ring. Two butt joint modes are mainly adopted in optical fiber communication, one is that an optical fiber jumper and another optical fiber jumper are in butt joint through a flange plate (as shown in figure 1), and at the moment, a ceramic ferrule of the optical fiber jumper is exposed, and a jumper connector is generally called as a male connector; another form is that the optical fiber patch cord is butted with a plug-in optical adapter, and at this time, the ferrule of the optical adapter is recessed in a metal sleeve, which is generally called a recessed adapter as a female head (see fig. 2).

In the actual production and use process, the real light transmission region is the core region of the optical fiber, so that the damage of the ceramic end face basically does not influence the transmission of optical signals and can be disregarded. The damage of the optical fiber end face mainly has two conditions, namely, the damage of a light-transmitting area is caused in the butt joint process of the optical fiber end face; secondly, the ceramic end face is attached with dirt due to operation or environmental pollution, the dirt can randomly and irregularly move, when the dirt moves to the optical fiber end face, the optical signal transmission is affected, the optical fiber end face needs to be cleaned in time, and when the optical fiber end face is wiped or cleaned, the optical fiber end face is damaged (as shown in fig. 3).

In order to better solve the problem of damage to the end face of the optical fiber, the existing schemes mainly have two types, namely, a mode of grinding and repairing the poor jumper or the adapter of the end face of the optical fiber again after being disassembled; and secondly, a mode of attenuation sheet isolation is adopted, namely a gasket is inserted between the two butted optical fiber end faces, so that a certain horizontal distance is formed between the two optical fiber end faces, and the physical isolation of the two optical fiber end faces is realized.

In the disassembly and repair technology, when the jumper wire is butted with the jumper wire, the ceramic end face is exposed, the damage of the ceramic end face can be repaired by adopting a secondary grinding mode, although the repair can be carried out, the cost is higher, the 3D index, the plugging repeatability, the quadriversal property, the interchangeability and other qualities of the repaired product are poor, the repair times are limited, particularly, the female adapter basically fails, and the damaged end face of the female adapter is basically scrapped.

In the disassembly and repair technology, the mode of isolating the attenuation sheet is adopted to realize the non-contact end face protection of the optical fibers, and the ceramic ferrules outside the two optical fiber patch cords cannot be in tight butt joint due to the additional gaskets, so that the insertion loss is increased, the serious reliability and stability exist, the test result is inaccurate, and even the optical fiber link connection fails.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a non-contact can't harm optic fibre wire jumper, realized the inseparable butt joint of the non-contact butt joint of optic fibre terminal surface and ceramic terminal surface in the wire jumper, product property can be good, and the insertion loss is secure, and the butt joint is reliable stable, and plug uniformity and repeatability are not influenced.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a non-contact can't harm optic fibre wire jumper, includes pottery lock pin, adapter metal casing, ceramic sleeve, adapter section lock pin, optic fibre, the pre-buried optic fibre in inside of pottery lock pin and adapter section lock pin, the butt joint of the one end of pottery lock pin and adapter section lock pin, the outside cover of pottery lock pin and adapter section lock pin butt joint department is equipped with ceramic sleeve, ceramic sleeve arranges in the adapter metal casing, the terminal surface of pottery lock pin is provided with annular groove along the periphery of optic fibre.

Specifically, the optical fiber in the ceramic ferrule is ground so that the end face of the optical fiber is lower than the ceramic end face of the ceramic ferrule and higher than the bottom of the annular groove.

Specifically, the middle part of the annular groove is a frustum.

The utility model has the advantages of it is following:

1. the jumper wire and the jumper wire are aligned in a non-contact way, and the butt joint damage of the optical fiber end faces is avoided;

2. the physical isolation between the end face of the ceramic ferrule and the end face of the optical fiber is realized, and the cleaning damage of the end face of the optical fiber caused by the dirt on the end face of the ceramic ferrule is avoided;

3. the ceramic ferrules are tightly butted, so that the concentricity, reliability and stability of the product are high;

4. the non-contact lossless butt joint of the optical fiber jumper is realized.

Drawings

FIG. 1 is a schematic diagram A of a prior art configuration;

FIG. 2 is a prior art schematic B;

FIG. 3 is a schematic diagram of a prior art ferrule;

FIG. 4 is a schematic structural view of the present invention;

FIG. 5 is an enlarged view of the structure at A in FIG. 4;

FIG. 6 is a cross-sectional view of the ferrule;

FIG. 7 is a side view of the ferrule;

in the figure: 1-ceramic ferrule, 2-ceramic sleeve, 3-flange plate shell, 4-adapter metal shell, 5-adapter segment ferrule, 6-, 7-rubber ring, 8-pass region, 9-optical fiber and 10-annular groove.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 4 to 7, the non-contact lossless optical fiber patch cord comprises a ferrule 1, an adapter metal shell 4, a ferrule 2, an adapter segment ferrule 5 and an optical fiber 9, wherein the optical fiber 9 is pre-embedded inside the ferrule 1 and the adapter segment ferrule 5, one end of the ferrule 1 is in butt joint with one end of the adapter segment ferrule 5, the ferrule 2 is sleeved outside the butt joint of the ferrule 1 and the adapter segment ferrule 5, the ferrule 2 is arranged inside the adapter metal shell 4, and an annular groove 10 is formed in the end face of the ferrule 1 along the periphery of the optical fiber 9.

Further, the optical fiber 9 within the ferrule 1 is ground so that its endface is lower than the endface of the ferrule 9 and higher than the bottom of the annular recess 10.

Further, the middle part of the annular groove 10 is a frustum.

In the technology for disassembling and repairing the jumper wire in the prior art group, when the jumper wire is butted with the jumper wire, the ceramic end face is exposed, the damage of the ceramic end face can be repaired in a secondary grinding mode, although the repair can be carried out, the cost is higher, the quality of a repaired product, such as 3D (three-dimensional) index, plugging repeatability, quadriversability, interchangeability and the like, is poor, the repairing frequency is limited, especially, the female adapter basically fails, and the end face of the female adapter is basically scrapped after being damaged.

In the second disassembly and repair technology, the optical fiber non-contact end face protection is realized by adopting an attenuation sheet isolation mode, and due to the fact that the ceramic ferrules outside the two optical fiber patch cords cannot be in tight butt joint due to the additional gasket, besides the insertion loss is increased, the serious reliability and stability exist, the test result is inaccurate, and even the optical fiber link connection fails;

in order to solve the existing problems, as shown in fig. 4, the present invention provides an annular groove 10 on the end surface of the ferrule 1 surrounding the optical fiber 9, the bottom of the annular groove 10 is lower than the end surface of the ferrule 1 and lower than the end surface of the optical fiber 9, and through the annular groove 10, it can be ensured that the contamination on the end surface of the ferrule 1 will not move to the end surface of the optical fiber 9, and it is ensured that the end surface of the optical fiber 9 is clean and not affected; and then optimizing a grinding process, controlling the end face of the optical fiber 9 to be lower than the end face of the ferrule 1 and higher than the bottom of the annular groove 10, and realizing non-contact butt joint of the end faces of the optical fibers 9.

A method of manufacturing a non-contact, lossless optical fiber jumper, comprising the steps of:

a. stripping a coating layer of the optical fiber 9, aging at high temperature to remove stress, and cleaning the outer surface of the fiber core of the optical fiber 9 by using alcohol;

b. filling the inner hole of the ceramic ferrule 1 with curing glue, and keeping low-temperature preheating;

c. inserting the optical fiber 9 processed in the step a into the inner hole of the ceramic ferrule 1 processed in the step b, so that the optical fiber is fully contacted with the curing adhesive, and ensuring that the curing adhesive seeps out of two ends of the ceramic ferrule 1;

d. c, placing the optical fiber 9 and the ceramic ferrule 1 processed in the step c in an optical fiber curing furnace for high-temperature curing;

e. and removing the curing glue on the end face of the cured ceramic ferrule 1, and then grinding the end face of the optical fiber 9 by using a grinding pad to enable the end face to be lower than the section of the ceramic ferrule 1 and higher than the bottom of the annular groove 10.

In the above steps, the steps a and b are not in sequence.

Further, in step c, the optical fiber 9 is pulled back and forth and rotated to make the optical fiber 9 fully contact with the curing adhesive.

Further, in the step d, when high-temperature curing is carried out, the ceramic ferrule 1 is vertically placed to ensure that the rest horizontal planes are vertical, vertical glue baking is realized, the optical fiber 9 is ensured to be vertical, and the glue is uniformly contracted.

The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any way. The technical solutions of the present invention can be used by anyone skilled in the art to make many possible variations and modifications to the technical solution of the present invention, or to modify equivalent embodiments with equivalent variations, without departing from the scope of the technical solution of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the present invention are all within the protection scope of the present invention.

Claims (3)

1. A non-contact type lossless optical fiber jumper wire is characterized in that: including ceramic lock pin (1), adapter metal casing (4), ceramic sleeve (2), adapter section lock pin (5), optic fibre (9), the inside pre-buried optic fibre (9) of ceramic lock pin (1) and adapter section lock pin (5), the one end butt joint of ceramic lock pin (1) and adapter section lock pin (5), the outside cover of ceramic lock pin (1) and adapter section lock pin (5) butt joint department is equipped with ceramic sleeve (2), in adapter metal casing (4) was arranged in ceramic sleeve (2), the terminal surface of ceramic lock pin (1) is provided with annular groove (10) along the periphery of optic fibre (9).

2. The non-contact lossless optical fiber patch cord according to claim 1, wherein: and grinding the optical fiber (9) in the ceramic ferrule (1) to enable the end face of the optical fiber to be lower than the ceramic end face of the ceramic ferrule (1) and higher than the bottom of the annular groove (10).

3. The non-contact lossless optical fiber patch cord according to claim 1, wherein: the middle part of the annular groove (10) is a frustum.

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